Resolution No. 2021-018RESOLUTION NO. 2021-18
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF VERNON
ADOPTING THE CITY OF VERNON 2020 URBAN WATER
MANAGEMENT PLAN
SECTION 1. Recitals.
A. The Urban Water Management Planning Act (“Act”), (California Water Code Sec.
10610, et seq.) requires designated urban water suppliers to prepare and adopt an Urban
Water Management Plan (“Plan”), and to update the Plan at least once every five years
on or before July 1, in years ending in six and one.
B. The Act applies to public and privately-owned water suppliers that provide water
for municipal purposes either directly or indirectly to more than 3,000 customers or that
supply more than 3,000 acre-feet of water annually.
C. The City is an urban supplier of water within the scope of the Act and is required
to prepare, adopt, and periodically update its Plan.
D. On June 7, 2016, the City Council adopted Resolution No. 2016-26 approving and
adopting the City’s Plan.
E. Pursuant to California Water Code Section 10621, the City has prepared an
updated Plan in accordance with legal requirements and had undertaken certain
coordination, public comment, and other procedures in relation to such Plan.
F. Prior to adopting this Resolution, the City Council conducted a duly noticed public
hearing in accordance with California Water Code Section 10642.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY
OF VERNON AS FOLLOWS:
SECTION 2. The City Council of the City of Vernon hereby finds and determines
that the above recitals are true and correct.
SECTION 3. The City Council of the City of Vernon finds that this action is exempt
under the California Environmental Quality Act (CEQA) in accordance with Water Code
Section 10652, which exempts the preparation and adoption of urban water management
plans from CEQA requirements, and CEQA Guideline Section 15061(b)(3), the general
rule that CEQA only applies to activities that may have a significant effect on the
environment, because the plan referenced herein is merely an update of the existing 2015
Urban Water Management Plan.
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SECTION 4. The City Council of the City of Vernon further finds that all persons
have had the opportunity to be heard or to file written comments to the proposed Plan
and, after due consideration of any and all evidence submitted at the publi c hearing,
hereby adopts the City of Vernon 20 20 Urban Water Management Plan, a copy of which
is attached hereto as Exhibit A.
SECTION 5. The City Council of the City of Vernon hereby authorizes and directs
the General Manager of the Public Utilities Dep artment to implement the water
conservation programs as detailed in the Plan and to carry out effective and equitable
water conservation programs.
SECTION 6. The City Council of the City of Vernon hereby authorizes and directs
the General Manager of the Public Utilities Department to submit a copy of the Plan within
30 days to the necessary parties in accordance with California Water Code Section
10644.
SECTION 7. The City Clerk shall certify the passage and adoption of this
resolution and enter it into the book of original resolutions.
APPROVED AND ADOPTED this 15th day of June, 2021.
______________________
MELISSA YBARRA, Mayor
ATTEST:
LISA POPE, City Clerk
(seal)
APPROVED AS TO FORM:
_________________________________
ARNOLD M. ALVAREZ -GLASMAN,
Interim City Attorney
I CERTIFY THAT THE FOREGOING RESOLUTION NO. 2021 -18 was passed and
adopted by the City Council of the City of Vernon at the Regular meeting on June 15,
2021 by the following vote:
AYES: 5 Council Members: Larios, Lopez, Merlo, Davis, Ybarra
NOES: 0
ABSENT: 0
ABSTAIN: 0
________________________________
LISA POPE, City Clerk
(seal)
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CITY OF VERNON
2020 URBAN WATER MANAGEMENT PLAN
VOLUME 1 – FINAL REPORT
JUNE 15, 2021
Prepared by
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CITY OF VERNON
2020 URBAN WATER MANAGEMENT PLAN
VOLUME 1 – FINAL REPORT
June 15, 2021
PREPARED FOR
CITY OF VERNON
4305 SOUTH SANTA FE AVENUE
VERNON, CA 90058
PREPARED BY
UNDER THE SUPERVISION OF
78205
ANTHONY M. HERDA, PE, MBA P.E.
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Table of Contents
Table of Contents ................................................................................................. i
List of Tables ..................................................................................................... vii
List of Figures .................................................................................................... vii
Executive Summary ....................................................................................... ES-1
Chapter 1 – Introduction and Overview ........................................................... 1-1
1.1 – Purpose ......................................................................................................................1-1
1.2 – UWMP Organization ...................................................................................................1-2
1.2.1 – Organization of Content ....................................................................................... 1-2
1.2.2 – Standardized Forms, Tables, and Displays ........................................................... 1-3
1.3 – Urban Water Management Planning and the California Water Code ............................1-5
1.4 – UWMPs in Relation to Other Efforts ............................................................................1-6
1.4.1 – Interagency Coordination .................................................................................... 1-6
1.4.2 – Public Participation .............................................................................................. 1-7
1.5 – UWMPs and Grant or Loan Eligibility ...........................................................................1-8
Chapter 2 – Plan Preparation ........................................................................... 2-1
2.1 – General Description ....................................................................................................2-1
2.2 – Basis for Preparing a Plan ............................................................................................2-1
2.2.1 – Public Water Systems........................................................................................... 2-2
2.3 – Individual or Regional Planning and Compliance ..........................................................2-2
2.3.1 – Regional UWMP ................................................................................................... 2-2
2.3.2 – Regional Alliance .................................................................................................. 2-3
2.4 – Fiscal or Calendar Year and Units of Measure ..............................................................2-4
2.4.1 – Fiscal or Calendar Year ......................................................................................... 2-4
2.4.2 – Reporting Complete 2020 Data ........................................................................... 2-4
2.4.3 – Units of Measure .................................................................................................. 2-4
2.5 – Coordination and Outreach .........................................................................................2-4
2.5.1 – Wholesale and Retail Coordination ..................................................................... 2-4
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2.5.2 – Coordination with Other Agencies and the Community...................................... 2-5
2.5.3 – Notice to Cities and Counties ............................................................................... 2-5
Chapter 3 – System Description ....................................................................... 3-1
3.1 – General Description ....................................................................................................3-1
3.2 – Historical Perspective .................................................................................................3-1
3.3 – Service Area Boundary Maps .......................................................................................3-2
3.4 – Service Area Climate ...................................................................................................3-4
3.5 – Service Area Population and Demographics .................................................................3-5
3.5.1 – Service Area Population ....................................................................................... 3-5
3.5.2 – Other Social, Economic, and Demographic Factors ............................................. 3-5
3.6 – Land Uses within Service Area .....................................................................................3-6
Chapter 4 – Customer Water Use ..................................................................... 4-1
4.1 – General Description ....................................................................................................4-1
4.2 – Non-Potable Versus Potable Water Use .......................................................................4-1
4.3 – Past, Current, and Projected Water Use by Sector ........................................................4-2
4.3.1 – Water Use by Sector ............................................................................................ 4-3
4.3.2 – Past Water Use ..................................................................................................... 4-4
4.3.3 – Distribution System Water Loss ........................................................................... 4-5
4.3.4 – Current Water Use ............................................................................................... 4-5
4.3.5 – Projected Water Use ............................................................................................ 4-6
4.3.6 – Characteristic Five-Year Water Use ..................................................................... 4-7
4.4 – Water Use for Lower Income Households ....................................................................4-8
4.5 – Climate Change Considerations ...................................................................................4-9
4.5.1 – City’s Perspective ................................................................................................. 4-9
4.5.2 – Regional Perspective .......................................................................................... 4-10
Chapter 5 – Conservation Target Compliance ................................................... 5-1
5.1 – General Description ....................................................................................................5-1
5.2 – Updating Calculations from 2015 UWMP .....................................................................5-2
5.2.1 – Update of Target Method .................................................................................... 5-2
5.2.2 – Updating Baseline and Target GPCDs .................................................................. 5-2
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5.2.3 – SB X7-7 Verification Form .................................................................................... 5-2
5.3 – Baseline Periods .........................................................................................................5-2
5.3.1 – Determining Baseline GPCD ................................................................................. 5-3
5.3.2 – Determining Target Confirmation ........................................................................ 5-4
5.4 – Service Area Population ..............................................................................................5-5
5.5 – Gross Water Use .........................................................................................................5-6
5.6 – 2020 Target ................................................................................................................5-7
5.6.1 – Target Method Selection and Application ........................................................... 5-8
5.7 – Baselines and Targets Summary ................................................................................ 5-10
5.8 – 2020 Compliance Daily Per-Capita Water Use (GPCD) ................................................ 5-10
5.8.1 – Meeting the 2020 Target ................................................................................... 5-10
5.8.2 – Adjustments to 2020 Gross Water Use .............................................................. 5-11
5.9 – Future Reporting of Water Use Compliance ............................................................... 5-11
5.9.1 – Statute and Regulation ...................................................................................... 5-12
5.9.2 – Economic Trends ................................................................................................ 5-16
Chapter 6 – System Supplies ............................................................................ 6-1
6.1 – General Description ....................................................................................................6-1
6.2 – Purchased or Imported Water .....................................................................................6-1
6.3 – Groundwater ..............................................................................................................6-2
6.3.1 – Basin Description ................................................................................................. 6-3
6.3.2 – Groundwater Management ................................................................................. 6-4
6.3.2.1 – Basin-Wide Management .................................................................... 6-4
6.3.2.2 – Local Management .............................................................................. 6-5
6.3.3 – Historical and Projected Pumping ........................................................................ 6-6
6.4 – Surface Water .............................................................................................................6-6
6.5 – Stormwater ................................................................................................................6-6
6.6 – Wastewater and Recycled Water ................................................................................6-7
6.6.1 – Recycled Water Coordination .............................................................................. 6-8
6.6.2 – Wastewater Collection, Treatment and Disposal ................................................ 6-9
6.6.3 – Recycled Water System Description .................................................................. 6-11
6.6.3.1 – City-Level Description ......................................................................... 6-11
6.6.3.2 – Regional Description .......................................................................... 6-11
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6.6.4 – Potential, Current and Projected Recycled Water Uses .................................... 6-14
6.6.5 – Planned vs. Actual Recycled Water Use ............................................................. 6-15
6.6.6 – Actions to Encourage and Optimize Future Recycled Water Use ...................... 6-15
6.7 – Desalinated Water Opportunities .............................................................................. 6-17
6.8 – Water Exchanges and Water Transfers ...................................................................... 6-17
6.8.1 – Groundwater Exchanges .................................................................................... 6-17
6.8.2 – Groundwater Transfers ...................................................................................... 6-18
6.9 – Future Water Projects ............................................................................................... 6-19
6.10 – Summary of Existing and Planned Sources of Water ................................................. 6-24
6.11 – Special Conditions ................................................................................................... 6-25
6.11.1 – Climate Change Effects .................................................................................... 6-25
6.11.2 – Gateway Water Management Authority ......................................................... 6-25
6.11.3 – Water Replenishment District of Southern California ..................................... 6-26
6.12 – Energy Intensity ...................................................................................................... 6-27
Chapter 7 – Water System Reliability ............................................................... 7-1
7.1 – General Description ....................................................................................................7-1
7.2 – Water Service Reliability Assessment ..........................................................................7-1
7.2.1 – Constraints on Water Sources ............................................................................. 7-1
7.2.1.1 – Constraints on Imported Water ........................................................... 7-1
7.2.1.2 – Constraints on Groundwater ................................................................ 7-3
7.2.1.3 – Constraints on Recycled Water ............................................................ 7-3
7.2.2 – Reliability by Year Type ........................................................................................ 7-3
7.2.3 – Water Service Reliability ...................................................................................... 7-4
7.2.3.1 – Average Year ........................................................................................ 7-5
7.2.3.2 – Single Dry Year ..................................................................................... 7-5
7.2.3.3 – Five Consecutive Dry Years ................................................................... 7-6
7.2.4 – Regional Supply Reliability ................................................................................... 7-6
7.3 – Drought Risk Assessment ............................................................................................7-8
Chapter 8 – Water Shortage Contingency Planning .......................................... 8-1
8.1 – General Description ....................................................................................................8-1
8.2 – Water Supply Reliability Analysis ................................................................................8-1
8.3 – Annual Water Supply and Demand Assessment Procedures .........................................8-2
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8.4 – Six Standard Water Shortage Levels ............................................................................8-3
8.4.1 – Water Conservation Stage I ................................................................................. 8-4
8.4.2 – Water Conservation Stage II ................................................................................ 8-4
8.4.3 – Water Conservation Stage III ............................................................................... 8-4
8.5 – Shortage Response Actions .........................................................................................8-5
8.5.1 – Supply Augmentation........................................................................................... 8-5
8.5.2 – Demand Reduction .............................................................................................. 8-5
8.5.2.1 – General Prohibitions............................................................................. 8-6
8.5.2.2 – Water Conservation Stage I ................................................................. 8-7
8.5.2.3 – Water Conservation Stage II ................................................................ 8-7
8.5.2.4 – Water Conservation Stage III ............................................................... 8-9
8.5.3 – Operational Changes .......................................................................................... 8-10
8.5.4 – Additional Mandatory Restrictions .................................................................... 8-10
8.5.5 – Emergency Response Plan ................................................................................. 8-10
8.5.6 – Seismic Risk Assessment and Mitigation Plan ................................................... 8-11
8.5.7 – Shortage Response Action Effectiveness ........................................................... 8-12
8.6 – Communication Protocols ......................................................................................... 8-13
8.7 – Compliance and Enforcement ................................................................................... 8-14
8.8 – Legal Authorities ....................................................................................................... 8-14
8.9 – Financial Consequences of WSCP .............................................................................. 8-16
8.10 – Monitoring and Reporting ....................................................................................... 8-16
8.11 – WSCP Refinement Procedures ................................................................................. 8-17
8.12 – Special Water Feature Distinction ............................................................................ 8-17
8.13 – Plan Adoption, Submittal, and Availability ............................................................... 8-17
Chapter 9 – Demand Management Measures .................................................. 9-1
9.1 – General Description ....................................................................................................9-1
9.2 – Demand Management Measures for Wholesale Suppliers ...........................................9-1
9.3 – Existing Demand Management Measures for Retail Suppliers .................................... 9-11
9.3.1 – Water Waste Prevention Ordinances ................................................................ 9-11
9.3.2 – Metering............................................................................................................. 9-13
9.3.3 – Conservation Pricing .......................................................................................... 9-13
9.3.4 – Public Education and Outreach .......................................................................... 9-14
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9.3.5 – Programs to Assess and Manage Distribution System Real Loss ....................... 9-14
9.3.6 – Water Conservation Program Coordination and Staffing Support .................... 9-15
9.3.7 – Other Demand Management Measures ............................................................ 9-15
9.4 – Implementation over the Past Five Years ................................................................... 9-16
9.4.1 –Water Waste Prevention .................................................................................... 9-16
9.4.2 – Meters ................................................................................................................ 9-16
9.4.3 – Conservation Pricing .......................................................................................... 9-16
9.4.4 – Public Education and Outreach .......................................................................... 9-16
9.4.5 – Programs to Assess and Manage Distribution System Real Loss ....................... 9-16
9.4.6 – Other Demand Management Measures ............................................................ 9-17
9.5 – Implementation to Achieve Water Use Targets .......................................................... 9-17
9.6 – Water Use Objectives (Future Requirements) ............................................................ 9-17
Chapter 10 – Plan Adoption, Submittal, and Implementation ........................ 10-1
10.1 – General Description ................................................................................................ 10-1
10.2 – Inclusion of All 2020 Data ........................................................................................ 10-1
10.3 – Notice of Public Hearing .......................................................................................... 10-1
10.3.1 – Notice to Cities and Counties ........................................................................... 10-1
10.3.2 – Notice to the Public .......................................................................................... 10-2
10.4 – Public Hearing and Adoption ................................................................................... 10-3
10.4.1 – Public Hearing .................................................................................................. 10-3
10.4.2 – Adoption .......................................................................................................... 10-3
10.5 – Plan Submittal ........................................................................................................ 10-4
10.5.1 – Electronic Data Submittal ................................................................................ 10-4
10.6 – Public Availability ................................................................................................... 10-5
10.7 – Amending an Adopted UWMP or Water Shortage Contingency Plan ........................ 10-5
10.7.1 – Amending a UWMP .......................................................................................... 10-5
10.7.2 – Amending a Water Shortage Contingency Plan ............................................... 10-5
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List of Tables
Table 3.1 – Service Area Climate................................................................................................................ 3-4
Table 3.2 – Summary of Land Use Analysis ................................................................................................ 3-6
Table 4.1 – Potable Water Uses by Sector ................................................................................................. 4-3
Table 4.2 – Historical Water Losses ........................................................................................................... 4-5
Table 4.3 – Lower Income Demand Projection .......................................................................................... 4-8
Table 5.1 – Summary of Baseline and Target Water Use Calculations ...................................................... 5-1
Table 5.2 – Baseline Per Capita Demand Calculation ................................................................................ 5-3
Table 5.3 – Calculation of 5-Year Target .................................................................................................... 5-4
Table 5.4 – Baseline, Interim, and Target Water Use ................................................................................ 5-7
Table 6.1 – Historical Pumping from the Central Basin ............................................................................. 6-6
Table 6.2 – Estimated Sources of Supply ................................................................................................. 6-24
Table 6.3 – Summary of 2020 Energy Efficiency ...................................................................................... 6-27
Table 7.1 – Projected Demand ................................................................................................................... 7-4
Table 7.2 – Average Year Supply and Demand Assessment ...................................................................... 7-5
Table 7.3 – Single Dry Year Supply and Demand Assessment ................................................................... 7-5
Table 7.4 – Multiple Dry Year Supply and Demand Comparison ............................................................... 7-6
Table 7.5 –Sources of Drought Risk Assessment Supply ............................................................................ 7-8
Table 8.1 – Relationship Between 2015 Shortage Levels and 2020 WSCP Mandated Shortage Levels .... 8-3
List of Figures
Figure 3.1 – Vicinity Map ........................................................................................................................... 3-2
Figure 3.2 – Water Service Areas in Vernon .............................................................................................. 3-3
Figure 4.1 – Total Usage by CBMWD Retail Agencies (2006-2018) ......................................................... 4-13
Figure 5.1 – Trends in Manufacturing Employment ................................................................................ 5-16
Figure 6.1 – CBMWD Recycled Water System ......................................................................................... 6-12
Figure 6.2 – CBMWD Recycled Water System (City of Vernon Vicinity) .................................................. 6-13
Figure 6.3 – MWD’s Potential Full Scale Recycled Water Program ......................................................... 6-16
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List of Appendices1
Appendix A – WUE and SB X7-7 Standardized Tables
Appendix B – California Water Code – Urban Water Management Planning
Appendix C – California Water Code – Sustainable Water Use and Demand Reduction (SB X7-7)
Appendix D – Notification of Intent to Prepare the Urban Water Management Plan
Appendix E – 2019 Consumer Confidence Report
Appendix F – SCAG Demographic Profile
Appendix G – Land Use Analysis
Appendix H - Central Basin Adjudication
Appendix I – CBMWD 2020 UWMP
Appendix J – Water Audits
Appendix K – Ordinance No. 995
Appendix L – Ordinance No. 1115
Appendix M – Ordinance No. 1161
Appendix N – Notice of Phase 1 Water Supply Shortage
Appendix O – Notice of Phase 2 Water Supply Shortage
Appendix P – CII Water Audits
Appendix Q – Notice of Public Hearing
Appendix R – Resolution of Adoption
Appendix S – DWR UWMP Checklist for Completeness
Appendix T – Energy Intensity Analysis
Appendix U – Natural Hazard Mitigation Plan
Appendix V – WRD Groundwater Basin Update for May 2021
Appendix W – WRD Technical Bulletin on Climate Change Effects
1 Appendices are provided under separate cover as Volume 2 of this 2020 Urban Water Management Plan.
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Executive Summary
Overview and Plan Preparation
This executive summary provides an overview of the content included in the City of Vernon’s (City) 2020
Urban Water Management Plan (UWMP). This report was prepared in compliance with the California
Water Code as set forth in the Urban Water Management Plan Guidebook 2020 (referred to hereafter as
Guidebook) established by the California Department of Water Resources (DWR).
Preparation of a UWMP is required by DWR for all urban water suppliers within the State of California.
Urban water suppliers are defined as publicly or privately owned water suppliers that provide water for
municipal purposes either directly or indirectly to more than 3,000 customers or supply more than 3,000
acre-feet (AF) of water annually. UWMPs must meet requirements established in the California Water
Code and the Urban Water Management Planning Act.
This UWMP is organized as directed by DWR in the Guidebook including chapter topics and content,
delineation of mandatory statutes, and standardized Water Use Efficiency (WUE) tables. Description and
analysis is specific to the City’s Water Service Area.
System Water Use
Water use within the Water Service Area consists primarily of commercial/industrial/institutional (CII)
with very little water use in other sectors.
Water Conservation Baselines and Target
In accordance with the Water Conservation Act of 2009, the City calculated its baseline water use and its
target for a 20% reduction in per capita water use by 2020 in terms of gallons per capita per day (GPCD).
For purposes of per capita water use, the City’s population was determined to be 100 for all historical,
current, and future calculations per discussions with DWR. The City baseline per capita water use is
100,296 GPCD. The City’s 2020 target per capita water use is 89,809 GPCD. The City has achieved a per
capita water use of 59,814 GPCD during 2020, which exceeds its 2020 goals.
System Supplies
The City has a diverse water supply portfolio including imported water from Central Basin Municipal Water
District (CBMWD), groundwater from the Central Basin, and recycled water for power generation from
CBMWD.
Water Supply Reliability
Water supply reliability was assessed for projected normal years, single dry years, and five consecutive
dry years. This means that projected supply was compared to projected demand under normal and
drought conditions to verify adequacy of supply. All of the City’s sources of supply are sustainably
managed and are projected to meet demand through 2045. It should be noted that water demand in the
City is not tied to weather or population growth; rather, fluctuation in water demand is most closely tied
to the economic cycle. The projected water demand is a balance between historical high-intensity
commercial and industrial activity, the 2020 water use target, and the impacts of ongoing water
conservation efforts.
The projected water supply is a balance between groundwater water rights, access to additional
groundwater through lease or agreement, access to purchased imported water, and access to recycled
water. Although demands are projected to exceed the City’s groundwater rights in the future, access to
additional supply through its associations and partnerships is the basis for the City’s water reliability.
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In the event of a multi-year drought during the next five years, the City faces no risk of a water shortage.
Water Shortage Contingency Planning
The City has enacted water conservation ordinances in order to provide guidance and authority for
responding to water supply shortages.
Demand Management Measures
Demand management measures (also known as water conservation best management practices) refer to
water conservation projects and programs implemented by the City and in association with its partners
to reduce water use or water loss. The City’s water conservation partners include CBMWD, members of
the Gateway Water Management Authority and members of the Southeast Water Coalition.
Adoption
A public hearing soliciting comments on the UWMP was held June 15, 2021. Following the public hearing,
the UWMP was adopted by the City Council.
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Chapter 1 – Introduction and Overview
In this introductory chapter, the importance and extent of the City’s water management planning efforts
is presented.
1.1 – Purpose
The California Water Code requires urban water suppliers servicing 3,000 or more connections or
supplying more than 3,000 acre-feet (AF) of water annually to prepare and adopt an Urban Water
Management Plan (UWMP) for submission to the Department of Water Resources (DWR) every five years.
The 2020 UWMP is an update to the 2015 UWMP, which was used as a foundation for th e current effort
to promote consistency. In addition, new regulations and updated guidance from DWR per the Urban
Water Management Plan Guidebook 2020 helped to shape the presentation and content of this
document.
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1.2 – UWMP Organization
1.2.1 – Organization of Content
The report is organized as requested by DWR in the following manner:
Executive Summary provide a lay description of the UWMP.
Chapter 1 - Introduction This chapter can be used to provide a discussion on fundamentals of the UWMP.
Chapter 2 - Plan Preparation This chapter provides information on the processes used for developing the
UWMP, including efforts in coordination and outreach.
Chapter 3 - System Description This chapter describes the City’s system, including maps of the service
area, an explanation of the service area and climate, and an overview of the City’s organizational structure
and history.
Chapter 4 - Customer Water Use This chapter describes and quantifies the current and projected water
uses within the City’s service area.
Chapter 5 – Conservation Target Compliance This chapter demonstrates compliance with the 2020 per-
capita water conservation mandate.
Chapter 6 - System Supplies This chapter describes and quantifies the City’s current and projected potable
and non-potable water supplies.
Chapter 7 - Water Supply Reliability This chapter describes the water system reliability through 2045,
providing for normal year, single dry year, and five consecutive dry years. This chapter also includes the
Drought Risk Assessment (DRA), or sustainability through a drought over the next five years.
Chapter 8 - Water Shortage Contingency Planning This chapter provides a structured plan for dealing
with water shortages.
Chapter 9 - Demand Management Measures This chapter describes efforts taken by the City and in
coordination with CBMWD to promote conservation and to reduce demand on the water supply.
Chapter 10 - Plan Adoption, Submittal, and Implementation This chapter document the steps taken to
make the UWMP publicly available, and to adopt and submit the UWMP in accordance with the Water
Code.
WUE Tables
Appendices
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1.2.2 – Standardized Forms, Tables, and Displays
Standardized Water Use Efficiency (WUE) tables as submitted via the WUE portal are provided in Appendix
A.
By convention, statutes related to meeting the minimum requirements of the Urban Water Management
Planning Act are provided in the following format:
By convention, citation of public documents is provided in the following format:
Citations from ordinances, government codes, and government planning documents are
provided in italics and offset one half inch from the right and left with respect to the
general content of this plan.
Water Code Section XXXXX
Pertinent language taken directly from the California Water Code or in reference thereto.
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By convention, the following acronyms and abbreviations appear in this report:
AB Assembly Bill
AF acre-feet
AFY acre-feet per year
APA Allowable Pumping Allocation
BMPs best management practices
CAP Conservation Awareness Program
CBMWD Central Basin Municipal Water Agency
CEQA California Environmental Quality Act
CII Commercial, Industrial, and Institutional
City City of Vernon
CPI consumer price index
CPUC California Public Utilities Commission
CUWCC California Urban Water Conservation Council
CVP Central Valley Project
CWC California Water Code
DMMs Demand Management Measures
DOE California Department of Energy
DVL Diamond Valley Lake
DWR California Department of Water Resources
Eto evapotranspiration
GPCD gallons per capita per day
HET high efficiency toilet
IRP Integrated Regional Plan
JOS Joint Outfall System
LACSD Los Angeles County Sanitation Districts
LRP Local Resources Program
MGD millions of gallons per day
MWD Metropolitan Water District of Southern California
RDM Robust Decision Making
SB Senate Bill
SCADA Supervisory Control and Data Acquisition System
SCAG Southern California Association of Governments
SWP State Water Project
USBR United States Bureau of Reclamation
UWMP Urban Water Management Plan
WRP water reclamation plant
WSAP Water Supply Allocation Plan
WUCA Water Utility Climate Alliance
WUE Water Use Efficiency
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1.3 – Urban Water Management Planning and the California Water Code
Following is a summary of the legislation that makes up Urban Water Management Planning:
• AB 1420: Requires implementation of demand management measures (DMMs)/best
management practices (BMPs) to qualify for water management grants or loans.
• AB 1465: Requires water suppliers to describe opportunities related to reclaimed water use and
stormwater recapture to offset potable water use.
• SB 6101, and SB 2212, which became effective beginning January 1, 2002, requires counties and
cities to consider information relating to the availability of water to supply new large
developments by mandating the preparation of further water supply planning and Water Supply
Assessments.
• SB 1087: Requires water suppliers to report single family residential (SFR) and multi-family
residential (MFR) projected water use for planned lower income units separately.
• SB 3185 requires the UWMP to describe the opportunities for development of desalinated water,
including but not limited to, ocean water, brackish water, and groundwater, as long-term supply.
• AB 1056 requires urban water suppliers to submit their UWMPs to the California State Library.
• SB X7-7: Requires development and use of new methodologies for reporting population growth
estimates, base per capita use, and water conservation, and requires meeting the developed
water conservation targets in order to qualify for water management grants and loans. This water
bill also extended the 2010 UWMP adoption deadline for retail agencies to July 1, 2011.
• SB 1478: This bill was signed on September 23, 2010 and extends the 2010 UWMP deadline for
wholesale agencies, such as the Metropolitan Water District of Southern California (MWD), to July
1, 2011, as SB X7-7 did for retail agencies.
• AB 1668 and SB 606: These laws, enacted in 2018, lay out a new long-term water conservation
framework for California to pick up where SB X7-7 left off.
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1.4 – UWMPs in Relation to Other Efforts
The following documents were reviewed, cited, and incorporated by reference into this UWMP:
• CBMWD 2020 Draft UWMP
• MWD 2020 Draft UWMP
• Vernon 2015 UWMP
• Vernon General Plan (as amended in 2015)
Planning documents inherently deal with uncertainties about the future. Uncertainty cannot be avoided;
however, adequate documentation and applied reason ensures defensibility against legal challenges,
completeness, and comprehensiveness. The following steps have been employed, and documented as
necessary, to satisfy issues surrounding supply uncertainty as they pertain to development of this UWMP:
• Acknowledge the uncertainty
• Specify the conclusion and how the conclusion was reached
• Reference supporting evidence
• Evaluate the likelihood that the conclusion is incorrect
• Provide an alternative in case the conclusion is proved incorrect
• Respond to comments regarding the conclusion
• Pay attention to the wholesaler’s plans
• Use the latest and best data available
1.4.1 – Interagency Coordination
The City coordinated directly on preparation of the UWMP with the local wholesaler, Central Basin
Municipal Water District (CBMWD), and with the Gateway Water Management Authority (GWMA) who is
preparing a UWMP as a regional alliance of which the City is a member. CBMWD provides imported water
and recycled water services to the City. The City drew heavily upon CBMWD’s perspective and insight
regarding regional water resources issues.
The following agencies were contacted directly regarding the opportunity to comment on the Draft
UWMP:
• Los Angeles County
• Los Angeles County Sanitation Districts
• Water Replenishment District of Southern California
• Central Basin Municipal Water District
• Gateway Water Management Authority
No comments were received from these agencies.
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1.4.2 – Public Participation
A public hearing to solicit comments on the Draft UWMP from the public was held on June 15, 2021.
Notification of the opportunity to comment on the Draft UWMP was provided pursuant to CWC 10642.
The Draft UWMP was made available via the City’s website and at City Hall. Abraham Alemu, the General
Manager of Public Utilities for the City of Vernon, provided a detailed summary of the Draft UWMP at the
Public Hearing. There were no comments from the public at the public hearing, and no written comments
were received from the public by the City. (to be updated following the public hearing)
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1.5 – UWMPs and Grant or Loan Eligibility
By submitting this Urban Water Management Plan by the specified deadline, the City of Vernon will
continue to be eligible for state water grants and loans.
Per Data USA2 and California Demographics3, the City’s 2019 annual median household income was
approximately $69,960. According to the United States Census Bureau4, the statewide median household
income from 2015-2019 (in 2019 dollars) was $75,235. The City’s annual median household income was
92% of the statewide annual median household income; thus, the City cannot be considered a
disadvantaged community.
2 Data USA: Vernon California (Accessed March 1, 2021): https://datausa.io/profile/geo/vernon-ca
3 California Demographics (Accessed May 20, 2021): https://www.california-demographics.com/vernon-
demographics
4 United States Census Bureau (2015-2019): https://www.census.gov/quickfacts/fact/table/CA/PST045219
Water Code Section 10608.56
(a) On and after July 1, 2016, an urban retail water supplier is not eligible for a water grant or loan
awarded or administered by the state unless the supplier complies with this part.
(c) Notwithstanding subdivision (a), the department shall determine that an urban retail water
supplier is eligible for a water grant or loan even though the supplier has not met the per capita
reductions required pursuant to Section 10608.24, if the urban retail water supplier has submitted
to the department for approval a schedule, financing plan, and budget, to be included in the grant
or loan agreement, for achieving the per capita reductions. The supplier may request grant or loan
funds to achieve the per capita reductions to the extent the request is consistent with the eligibility
requirements applicable to the water funds.
(e) Notwithstanding subdivision (a), the department shall determine that an urban retail water
supplier is eligible for a water grant or loan even though the supplier has not met the per capita
reductions required pursuant to Section 10608.24, if the urban retail water supplier has submitted
to the department for approval documentation demonstrating that its entire service area qualifies
as a disadvantaged community.
(f) The department shall not deny eligibility to an urban retail water supplier or agricultural water
supplier in compliance with the requirements of this part and Part 2.8 (commencing with Section
10800), that is participating in a multiagency water project, or an integrated regional water
management plan, developed pursuant to Section 75026 of the Public Resources Code, solely on
the basis that one or more of the agencies participating in the project or plan is not implementing
all of the requirements of this part or Part 2.8 (commencing with Section 10800).
Water Code Section 10656
An urban water supplier is not eligible for a water grant or loan awarded or administered by the
state unless the urban water supplier complies with this part. California Code of Regulations Section
596.1 (b)(2) “disadvantaged community” means a community with a median household income
that is less than 80 percent of the statewide annual median household income.
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Chapter 2 – Plan Preparation
2.1 – General Description
Plan Preparation deals with protocols and documentation for notifications, inter-agency coordination,
publication, and adoption. Adoption of the UWMP implies subsequent implementation by the adopting
agency, and Plan Preparation drills down to the details of the adopting agency’s implementation strategy.
2.2 – Basis for Preparing a Plan
The City provides municipal water service in excess of 3,000 AFY. This defines the City as an urban water
supplier. Therefore, the City has prepared this Urban Water Management Plan update in compliance with
CWC 10621(a).
Water Code Section 10617
“Urban water supplier” means a supplier, either publicly or privately owned, providing water for
municipal purposes either directly or indirectly to more than 3,000 customers or supplying more
than 3,000 acre-feet of water annually. An urban water supplier includes a supplier or contractor
for water, regardless of the basis of right, which distributes or sells for ultimate resale to customers.
This part applies only to water supplied from public water systems.
Water Code Section 10620
Every person that becomes an urban water supplier shall adopt an urban water management plan
within one year after it has become an urban water supplier.
Water Code Section 10621
(a) Each urban water supplier shall update its plan at least once every five years on or before July
1, in years ending in six and one, incorporating updated and new information from the five years
preceding each update.
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2.2.1 – Public Water Systems
The City’s Public Water System number is CA1910167.
Standardized WUE Tables are provided in Appendix A.
The layout of this report corresponds to preferences provided by DWR.
2.3 – Individual or Regional Planning and Compliance
The City is submitting an individual plan and is participating in a regional alliance.
2.3.1 – Regional UWMP
The City is not participating in a Regional UWMP.
Water Code Section 10644
(a)(2) The plan, or amendments to the plan, submitted to the department … shall include any
standardized forms, tables, or displays specified by the department.
California Health and Safety Code 116275
(h) “Public Water System” means a system for the provision of water for human consumption
through pipes or other constructed conveyances that has 15 or more service connections or
regularly serves at least 25 individuals daily at least 60 days out of the year.
Water Code Section 10620
(d)(1) An urban water supplier may satisfy the requirements of this part by participation in area
wide, regional, watershed, or basin wide urban water management planning where those plans
will reduce preparation costs and contribute to the achievement of conservation and efficient water
use.
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2.3.2 – Regional Alliance
The City is participating in the Gateway Regional Alliance. A copy of this UWMP and supporting data have
been provided to the Gateway Regional Alliance to assist their planning efforts.
Water Code Section 10608.20
(a)(1) …Urban retail water suppliers may elect to determine and report progress toward achieving
these targets on an individual or regional basis as provided in subdivision (a) of Section 10608.28…
Water Code Section 10608.28
(a) An urban retail water supplier may meet its urban water use target within its retail service area,
or through mutual agreement by any of the following:
(1) Through an urban wholesale water supplier.
(2) Through a regional agency authorized to plan and implement water conservation, including, but
not limited to, an agency established under the Bay Area Water Supply and Conservation Agency
Act (Division 31 (commencing with Section 81300)).
(3) Through a regional water management group as defined in Section 10537.
(4) By an integrated regional water management funding area.
(5) By hydrologic region.
(6) Through other appropriate geographic scales for which computation methods have been
developed by the department.
(b) A regional water management group, with the written consent of its member agencies, may
undertake any or all planning, reporting, and implementation functions under this chapter for the
member agencies that consent to those activities. Any data or reports shall provide information
both for the regional water management group and separately for each consenting urban retail
water supplier and urban wholesale water supplier.
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2.4 – Fiscal or Calendar Year and Units of Measure
2.4.1 – Fiscal or Calendar Year
Water use is reported on a calendar year basis.
2.4.2 – Reporting Complete 2020 Data
Water use is reported on a calendar year basis. Water use and supply data for the entire calendar year
2020 are included in the 2020 UWMP.
2.4.3 – Units of Measure
Annual water use is reported as acre-feet per year (AFY).
Per capita water use is reported as gallon per capita per day (GPCD).
2.5 – Coordination and Outreach
2.5.1 – Wholesale and Retail Coordination
The City coordinated directly on preparation of the UWMP with the local wholesaler, CBMWD. CBMWD
provides imported water and recycled water services to the City. The City drew heavily upon CBMWD’s
perspective and insight regarding regional water resources issues. In addition, the City provided CBMWD
with water use projections as documented in Appendix I.
Water Code Section 10608.20
(a)(1) Urban retail water suppliers…may determine the targets on a fiscal year or calendar year
basis.
Water Code Section 10631
(j) An urban water supplier that relies upon a wholesale agency for a source of water shall provide
the wholesale agency with water use projections from that agency for that source of water in five-
year increments to 20 years or as far as data is available. The wholesale agency shall provide
information to the urban water supplier for inclusion in the urban water supplier’s plan that
identifies and quantifies, to the extent practicable, the existing and planned sources of water as
required by subdivision (b), available from the wholesale agency to the urban water supplier over
the same five-year increments, and during various water-year types in accordance with subdivision
(c). An urban water supplier may rely upon water supply information provided by the wholesale
agency in fulfilling the plan informational requirements of subdivisions (b) and (c).
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2.5.2 – Coordination with Other Agencies and the Community
The following agencies were contacted directly regarding the opportunity to comment on the Draft
UWMP:
• Los Angeles County
• Los Angeles County Sanitation Districts
• Water Replenishment District of Southern California
• Central Basin Municipal Water District
• Gateway Water Management Authority
• The general public
No comments were received from these agencies or the public.
2.5.3 – Notice to Cities and Counties
Pursuant to CWC 10621(b), Los Angeles County was notified of the opportunity to review the plan. See
Appendix D for a copy of the notification.
Water Code Section 10620
(d)(3) Each urban water supplier shall coordinate the preparation of its plan with other appropriate
agencies in the area, including other water suppliers that share a common source, water
management agencies, and relevant public agencies, to the extent practicable.
Water Code Section 10642
Each urban water supplier shall encourage the active involvement of diverse social, cultural, and
economic elements of the population within the service area prior to and during the preparation of
the plan...
Water Code Section 10621
(b) Every urban water supplier required to prepare a plan pursuant to this part shall, at least 60
days before the public hearing on the plan required by Section 10642, notify any city or county
within which the supplier provides water supplies that the urban water supplier will be reviewing
the plan and considering amendments or changes to the plan.
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Chapter 3 – System Description
System Description provides for demonstrating a deep understanding of the service area including the
physical boundary, the associated current and projected population, and demographic and weather-
related influences.
3.1 – General Description
The subsections that follow provide a detailed description of the City’s water service area in terms of
history, service area location, climate, population and demographics, and land uses.
3.2 – Historical Perspective
City founders recognized the significance of the three major railroads running through the area. The
founders convinced railroad executives to run spur tracks off the main lines and later incorporated the
adjacent three miles as an "exclusively industrial" city named after a dirt road, Vernon Avenue, crossing
its center.
The first industry in the City dealt with livestock. Two giant stockyards with meat packing facilities became
Vernon's signature industry. Twenty-seven slaughterhouses lined Vernon Avenue from Soto Street to
Downey Road through the 1960s.
In the 1920s and 1930s, heavy industries proliferated including steel (U.S. and Bethlehem), aluminum
(Alcoa), glass (Owens), can-making (American Can) and automobile production (Studebaker). In the 1940s
and 1950s, more industries opened for business in Vernon including aerospace contractors (Norris
Industries), box and paper manufacturers, drug companies (Brunswig), and food processors (General
Mills, Kal Kan). A strong, unionized labor force contributed to excellent middle class incomes for thousands
of families in the region.
In 1932, a Vernon bond authorized the construction of the City's own Light & Power plant, which is still
operational today. Low-cost power and water, along with low taxes, attracted businesses to Vernon.
Water Code Section 10631.
(a) Describe the service area of the supplier, including current and projected population, climate,
and other social, economic, and demographic factors affecting the supplier’s water management
planning. The projected population estimates shall be based upon data from the state, regional, or
local service agency population projections within the service area of the urban water supplier and
shall be in five-year increments to 20 years or as far as data is available. The description shall
include the current and projected land uses within the existing or anticipated service area affecting
the supplier’s water management planning. Urban water suppliers shall coordinate with local or
regional land use authorities to determine the most appropriate land use information, including,
where appropriate, land use information obtained from local or regional land use authorities, as
developed pursuant to Article 5 (commencing with Section 65300) of Chapter 3 of Division 1 of Title
7 of the Government Code.
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Offering an environment uniquely friendly to business, Vernon is the home to industries including food
and agriculture, apparel, steel, plastics, logistics and home furnishings. Vernon maintains strong
philanthropic ties with the neighboring communities where much its workforce lives, providing significant
financial support for public services like health care and education.
3.3 – Service Area Boundary Maps
The City of Vernon is located in the Los Angeles-Long Beach metro area, as shown in Figure 3.1.
Figure 3.1 – Vicinity Map
The City is surrounded by the cities of Los Angeles, Huntington Park, Maywood, Bell, and Commerce.
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Most of the geographical area of Vernon is supplied by the City. The California Water Service Company
(East Los Angeles District, Commerce System) serves some of the northeast portion of the City, and a small
portion of southeast Vernon is serviced by the Maywood Mutual Water Company Number 3. The service
areas of the three water suppliers serving Vernon are shown in Figure 3.2.
Figure 3.2 – Water Service Areas in Vernon
All analyses and references in this plan refer to the City of Vernon Water Service Area, shown above.
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3.4 – Service Area Climate
Information on climate was provided by the Western Regional Climate Center website5 and based on
continuous meteorological data collected at the USC Weather Station (approximately 4.4 miles from the
City). Table 3.1 provides a benchmark of historical temperatures typical to the City, based on the period
of record (1877 to 2021).
Table 3.1 – Service Area Climate
Month
Average Monthly High
Temperature
(degrees F)
Average Monthly Low
Temperature
(degrees F)
Average Monthly
Temperature
(degrees F)
January 66.3 47.5 56.9
February 67.1 48.7 57.9
March 68.5 50.3 59.4
April 71.0 52.7 61.9
May 72.9 55.8 64.4
June 77.2 59.0 68.1
July 82.3 62.4 72.4
August 83.2 63.1 73.2
September 82.0 61.7 71.8
October 77.6 57.7 67.6
November 72.9 52.3 62.6
December 67.4 48.4 57.9
Annual Average 74.0 55.0 64.5
The warmest month of the year is August with an average maximum temperature of 83.2 °F, while the
coldest month of the year is January with an average minimum temperature of 47.5 °F. Temperature
variations between night and day tend to be moderate during both summer and winter with an average
difference that can reach over 20 °F.
The annual average precipitation is 14.4 inches. The wettest month of the year is February with an average
rainfall of 3.2 inches.
5 https://wrcc.dri.edu/cgi-bin/cliMAIN.pl?ca5115
Water Code Section 10631(a)
A plan shall… Describe the service area of the supplier, including … climate…
Water Code Section 10630.
It is the intention of the Legislature, in enacting this part, to permit levels of water management
planning… while accounting for impacts of climate change.
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3.5 – Service Area Population and Demographics
3.5.1 – Service Area Population
Approximately 100 people live in the Water Service Area, while approximately 34,500 people come to
the City each day for work. That’s a ratio of employees to residents of about 345 to one.
For purposes of preparing this document, it was determined to impose a constant population of 100 for
all calculations within the period 1990 to 2045. Note that only residents are included in the population
projections. Additional explanation of the Water Service Area population is provided in Section 5.5.
3.5.2 – Other Social, Economic, and Demographic Factors
All of the Water Service Area, which is comprised predominately of commercial and industrial land uses,
is built-out with almost no net increase in accounts anticipated in the future. Most new accounts would
be attributed to industrial/commercial business turnover rate, rather than growth. Over the past 10 years,
about 85% of all water was delivered to the commercial and industrial sectors, about 10% was dedicated
to power generation, with the remaining 5% comprised of residential, losses and other uses.
The City has very little residential demand or landscaping demand. Residential demand accounts for about
0.1% of total demand. The irrigable area in the City is estimated at less than 16 acres, or about 0.7% of
total area. As a result, the City does not follow the typical water demand patterns for water systems in
California, which tend to vary relative to population and precipitation. Rather, demands on City resources,
including water, respond to national and global economic trends.
Due to the nature of Vernon as a center of commercial and industrial activity, water demand within the
City is linked to the impacts of the marketplace on the region and beyond. For this reason, there is still
potential for increases in water demand despite being built-out. Water demand in the commercial and
industrial sectors is linked more directly to economic intensity and productivity than to supporting the
needs of the local population. Furthermore, Vernon’s infrastructure is designed to meet the needs of the
commercial and industrial sectors in general whatever they may be, rather than being limited to the
specific needs of its current customers. As such, the infrastructure is very robust and adaptable making it
capable of meeting the changing requirements necessary to fulfill its mission of being an “ideal location
for industry.”
Water Code Section 10631(a)
Describe the service area of the supplier, including current and projected population …The projected
population estimates shall be based upon data from the state, regional, or local service agency
population projections within the service area of the urban water supplier and shall be in five-year
increments to 20 years or as far as data is available.
Water Code Section 10631
Describe the service area of the supplier, including… other social, economic and demographic
factors affecting the supplier’s water management planning.
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Therefore, Vernon has an obligation to have a system in place capable of meeting the demands associated
with high intensity and productivity in the commercial and industrial sectors, whenever those demands
arise as dictated by economic factors that are largely outside of the City’s control.
Additional demographic data prepared by Southern California Association of Governments is provided in
Appendix F.
3.6 – Land Uses within Service Area
A land use analysis was prepared using Southern California Association of Government land use data
within the Water Service Area. It should be noted that the City historically transformed itself to meet ever-
changing industrial and commercial needs. As an example, during the early years of the City, trains
dominated the transportation of goods, but today there is a mixed transportation system. As a result,
many parcels originally designated for rail transportation have been repurposed. Also, parcel boundaries
are not necessarily consistent with the water service area boundary. Any parcel 50% or more within the
Water Service Area was included in the analysis.
The complete analysis is provided in Appendix G. A summary of the analysis is provided in Table 3.2.
Table 3.2 – Summary of Land Use Analysis
Sector Area
(acres)
Percent of
Total Area
Industrial 881.0 40.0%
Commercial, Wholesaling, and Warehousing 723.4 32.8%
Transportation 340.4 15.4%
Utilities 141.9 6.4%
Government 47.6 2.2%
All Others 69.2 3.2%
Totals 2,203.5 100.0%
Water Code Section 10631(a)
The description shall include the current and projected land uses within the existing or anticipated
service area affecting the supplier’s water management planning. Urban water suppliers shall
coordinate with local or regional land use authorities to determine the most appropriate land use
information, including, where appropriate, land use information obtained from local or regional
land use authorities…
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Chapter 4 – Customer Water Use
4.1 – General Description
Customer Water Use involves organizing and reducing historical water demand data into pre-determined
categories and timeframes. Standardized methodologies are employed to calculate a historical baseline
for purposes of demonstrating achievement of water use reduction goals.
4.2 – Non-Potable Versus Potable Water Use
The City provides recycled water to one customer and potable water to all others. The City does not
receive or deliver raw water. This chapter deals primarily with potable water. Recycled water is discussed
in greater detail in Chapter 6.
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4.3 – Past, Current, and Projected Water Use by Sector
Water Code Section 10635.
(a) Every urban water Supplier shall include, as part of its urban water management plan, an
assessment of the reliability of its water service to its customers during normal, dry, and multiple
dry water years. This water supply and demand assessment shall compare the total water supply
sources available to the water supplier with the long-term total projected water use over the next
20 years, in five-year increments, for a normal water year, a single dry water year, and a drought
lasting five consecutive water years. The water service reliability assessment shall be based upon
the information compiled pursuant to Section 10631, including available data from state, regional,
or local agency population projections within the service area of the urban water supplier.
Water Code Section 10631(d)
(1) For an urban retail water supplier, quantify, to the extent records are available, past and current
water use, over the same five-year increments described in subdivision (a), and projected water
use, based upon information developed pursuant to subdivision (a), identifying the uses among
water use sectors, including, but not necessarily limited to, all of the following…
(2). The water use projections shall be in the same five-year increments described in subdivision (a).
(4)(A) Water use projections, where available, shall display and account for the water savings
estimated to result from adopted codes, standards, ordinances, or transportation and land use
plans identified by the urban water supplier, as applicable to the service area.
(B) To the extent that an urban water supplier reports the information described in subparagraph
(A), an urban water supplier shall do both of the following: (i) Provide citations of the various codes,
standards, ordinances, or transportation and land use plans utilized in making the projections. (ii)
Indicate the extent that the water use projections consider savings from codes, standards,
ordinances, or transportation and land use plans. Water use projections that do not account for
these water savings shall be noted of that fact.
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4.3.1 – Water Use by Sector
Historical, current, and projected potable water demand by sector is provided in Table 4.1.
Table 4.1 – Potable Water Uses by Sector
Year Single-Family
Residential
Multi-Family
Residential Commercial Industrial Other
2005 5 1 5,080 4,681 216
2010 7 1 5,037 2,139 30
2015 5 1 4,480 1,894 17
2020 6 2 5,045 1,234 11
2025 6 2 4,600 4,600 252
2030 6 2 4,600 4,600 252
2035 6 2 4,600 4,600 252
2040 6 2 4,600 4,600 252
2045 6 2 4,600 4,600 252
Water Code Section 10631(d)
(1) For an urban retail water supplier, quantify, to the extent records are available, past and current
water use, over the same five-year increments described in subdivision (a), and projected water
use, based upon information developed pursuant to subdivision (a), identifying the uses among
water use sectors, including, but not necessarily limited to, all of the following:
(A) Single-family residential.
(B) Multifamily.
(C) Commercial.
(D) Industrial.
(E) Institutional and governmental.
(F) Landscape.
(G) Sales to other agencies.
(H) Saline water intrusion barriers, groundwater recharge, or conjunctive use, or any combination
thereof.
(I) Agricultural.
(J) Distribution system water loss.
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Historically, demand in the commercial and industrial sectors were comparable and dominated all other
demand sectors. More recently, commercial activity has remained high but industrial activity has declined.
The decline in industrial activity is attributed to the economic downturn of 2008.
The demand projections provided in Table 4.1 account for (1) a high level of intensity in the commercial
and industrials sectors, (2) the implementation of CII water conservation activities, and (3) framing future
demand in terms of compliance with the Water Conservation Act. More information on compliance with
the Water Conservation Act is provided in Chapter 5.
4.3.2 – Past Water Use
Past water use is quantified in Table 4.1, above.
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4.3.3 – Distribution System Water Loss
The FY 2019-2020 AWWA Water Audit is provided in Appendix J. Water losses for FY 2019-2020 were
calculated at 249 AFY, or approximately 4% of total production.
Historical water losses are summarized below in Table 4.2.
Table 4.2 – Historical Water Losses
Year1 Water Losses
2015-2016 N/A2
2016-2017 555
2017-2018 512
2018-2019 505
2019-2020 249
1 AWWA Water Audits are completed on a fiscal year schedule (July through June).
2 The City’s first AWWA Water Audit was completed starting FY 2016-2017.
4.3.4 – Current Water Use
Current water use is quantified in Table 4.1, above.
Water Code Section 10631(d)(1)
For an urban retail water supplier, quantify, to the extent records are available, past and current
water use, over the same five-year increments described in subdivision (a), and projected water
use, based upon information developed pursuant to subdivision (a), identifying the uses among
water use sectors, including, but not necessarily limited to, all of the following…
(J) Distribution system water loss….
Water Code Section 10631(d)(3)
(A) The distribution system water loss shall be quantified for each of the five years preceding the
plan update, in accordance with rules adopted pursuant to Section 10608.34
(B) The distribution system water loss quantification shall be reported in accordance with a
worksheet approved or developed by the department through a public process. The water loss
quantification worksheet shall be based on the water system balance methodology developed by
the American Water Works Association.
(C) In the plan due July 1, 2021, and in each update thereafter, data shall be included to show
whether the urban retail water supplier met the distribution loss standards enacted by the board
pursuant to Section 10608.34.
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4.3.5 – Projected Water Use
Projected water use is quantified in Table 4.1.
Water Code Section 10635 (a).
Every urban water supplier shall include, as part of its urban water management plan, an
assessment of the reliability of its water service to its customers during normal, dry, and multiple
dry water years. This water supply and demand assessment shall compare the total water supply
sources available to the water supplier with the long-term total projected water use over the next
20 years, in five-year increments, for a normal water year, a single dry water year, and a drought
lasting five consecutive water years. The water service reliability assessment shall be based upon
the information compiled pursuant to Section 10631, including available data from state, regional,
or local agency population projections within the service area of the urban water supplier.
Water Code Section 10631
(h) An urban water supplier that relies upon a wholesale agency for a source of water shall provide
the wholesale agency with water use projections from that agency for that source of water in five-
year increments to 20 years or as far as data is available… The wholesale agency shall provide
information to the urban water supplier for inclusion in the urban water supplier’s plan that
identifies and quantifies, to the extent practicable, the existing and planned sources of water as
required by subdivision (b), available from the wholesale agency to the urban water supplier over
the same five-year increments, and during various water-year types in accordance with subdivision
(f). An urban water supplier may rely upon water supply information provided by the wholesale
agency in fulfilling the plan informational requirements of subdivisions (b) and (f).
Water Code Section 10631(d)(4)
(A) Water use projections, where available, shall display and account for the water savings
estimated to result from adopted codes, standards, ordinances, or transportation and land use
plans identified by the urban water supplier, as applicable to the service area.
(B) To the extent that an urban water supplier reports the information described in subparagraph
(A), an urban water supplier shall do both of the following:
(i) Provide citations of the various codes, standards, ordinances, or transportation and land use
plans utilized in making the projections.
(ii) Indicate the extent that the water use projections consider savings from codes, standards,
ordinances, or transportation and land use plans. Water use projections that do not account for
these water savings shall be noted of that fact.
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4.3.6 – Characteristic Five-Year Water Use
The City is built out and water use has stabilized since economic recovery from the 2008 recession at
approximately 7,200 AFY. The City has access to 100% of its adjudicated pumping allocation in the Central
Basin plus sufficient recycled water for cooling at the Malburg Power Plant, for a total of approximately
8,339 AFY. Pumping in excess of adjudicated rights is assumed to be unavailable a during long-term
drought. Given these conditions, the City has adequate available supply to meet water use requirements
during an immediate five-year drought.
Water Code Section 10635(b)
Every urban water supplier shall include, as part of its urban water management plan, a drought
risk assessment for its water service to its customers as part of information considered in
developing the demand management measures and water supply projects and programs to be
included in the urban water management plan. The urban water supplier may conduct an interim
update or updates to this drought risk assessment within the five-year cycle of its urban water
management plan update. The drought risk assessment shall include each of the following…
(3) A comparison of the total water supply sources available to the water supplier with the total
projected water use for the drought period. [Emphasis added]
(4) Considerations of the historical drought hydrology, plausible changes on projected supplies and
demands under climate change conditions, anticipated regulatory changes, and other locally
applicable criteria.
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4.4 – Water Use for Lower Income Households
Per the Vernon General Plan Housing Element, 25% of the residential population of Vernon is considered
lower income. The population within the water service area is very small and essentially stagnant. There
has been very modest growth within the City; however, most of the growth is outside of the City’s water
service area in Maywood Mutual Water Company No. 3. Water demand for the entire residential sector
is approximately 8 AFY, which is approximately 0.1% of total demand. Table 4.2 provides a projection of
lower income demand.
Table 4.3 – Lower Income Demand Projection
Sector 2025 2030 2035 2040 2045
Single Family Residential 1.5 1.5 1.5 1.5 1.5
Multi-Family Residential 0.5 0.5 0.5 0.5 0.5
Water Code Section 10631.1.
(a) The water use projections required by Section 10631 shall include projected water use for single-
family and multifamily residential housing needed for lower income households, as defined in
Section 50079.5 of the Health and Safety Code, as identified in the housing element of any city,
county, or city and county in the service area of the supplier.
California Health and Safety Code Section 50079.5 (a)
“Lower income households” means persons and families whose income does not exceed the
qualifying limits for lower income families… In the event the federal standards are discontinued,
the department shall, by regulation, establish income limits for lower income households for all
geographic areas of the state at 80 percent of area median income, adjusted for family size and
revised annually.
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4.5 – Climate Change Considerations
4.5.1 – City’s Perspective
The City’s perspective on climate change does not impact water supply or demand. Per the Vernon
General Plan:
In 2006, the California Legislature adopted AB 32, the Global Warming Solutions Act of
2006, to address concerns regarding the potential impact of climate change on the State’s
economy and the environment. The legislation requires the California Air Resources Board
to determine the level of greenhouse gases produced in 1990 and outline strategies to
ensure that the level of emissions in 2020 do not exceed the 1990 level. The overall goal is
to establish a comprehensive program of regulatory and market mechanisms to achieve
real, quantifiable, cost-effective reductions of greenhouse gas emissions. Specifically, AB
32 (as codified in the California Health and Safety Code) requires the California Air
Resources Board to:
• Establish a statewide greenhouse gas emissions cap for 2020, based on 1990
emissions
• Adopt mandatory reporting rules for significant sources of greenhouse gases
• Adopt a plan indicating how emission reductions will be achieved from significant
greenhouse gas sources via regulations, market mechanisms, and other actions
• Adopt regulations to achieve the maximum technologically feasible and cost-
effective reductions in greenhouse gas, including provisions for using both market
mechanisms and alternative compliance mechanisms
SB 375, passed into law in 2008, has the goal of fostering development patterns —and
more compact patterns in particular—that reduce the need to drive, thereby reducing air
Water Code Section 10630.
It is the intention of the Legislature, in enacting this part, to permit levels of water management
planning commensurate with the numbers of customers served and the volume of water supplied,
while accounting for impacts from climate change.
Water Code Section 10635(b)
Every urban water supplier shall include, as part of its urban water management plan, a drought
risk assessment for its water service to its customers as part of information considered in
developing the demand management measures and water supply projects and programs to be
included in the urban water management plan. The urban water supplier may conduct an interim
update or updates to this drought risk assessment within the five-year cycle of its urban water
management plan update. The drought risk assessment shall include each of the following…
(4) Considerations of the historical drought hydrology, plausible changes on projected supplies and
demands under climate change conditions, anticipated regulatory changes, and other locally
applicable criteria.
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pollution from car exhaust, conserving water, and protecting habitat, among other
benefits. This law is designed to align regional land use, housing, and transportation plans
with greenhouse gas reduction targets.
In Vernon, emissions are regulated by the Southern California Air Quality District, as well
as State and federal agencies. The agencies have imposed regulations to reduce emissions
from both stationary and vehicular sources. These actions have led to a substantial
improvement in air quality in the Southern California air basin and presumably have had
a concurrent effect on greenhouse gas emissions. Further reductions are anticipated as
new requirements are imposed by current legislation and regulations.
The City of Vernon is a built out city, and the General Plan does not provide for any
substantive increase in either square footage in industrial development or substantive
increases in employment (see Table LU-1 in the Land Use Element). Future residential
development is limited pursuant to the Land Use Element. This limited residential
development will provide a new housing opportunity for local workers to live near places
of employment in Vernon, furthering SB 375 goals. Given the limited changes anticipated
as part of this General Plan, the issue of increased emissions resulting from growth is not
a significant concern.
4.5.2 – Regional Perspective
A regional perspective on the impacts of climate change is provided by CBMWD in the following
subsection, per the CBMWD 2020 Draft UWMP.
CLIMATE CHANGE
The rise of anthropogenic activities producing carbon dioxide in the world has changed
the earth’s climate by emitting greenhouse gasses responsible for global warming. This
has resulted in extreme weather events occurring more frequently. The severity and
frequency of climate change impacts on temperature and precipitation patterns can be
difficult to forecast due to dramatic shifts in weather patterns as a result of increased
concentrations of carbon dioxide in the atmosphere. While the precise timing, severity,
and regional impacts of these temperature and precipitation changes are uncertain,
climate researchers have identified several important issues of concern for water planners
in California. The climate change impacts of concern are as follows:
Temperature Increases
• More winter precipitation falling as rain rather than snow, leading to reduced
snowpack water storage, reduced long term soil humidity, reduced groundwater
and downstream flows, and reduced imported water deliveries
• Higher irrigation demands as temperatures alter evapotranspiration rates, and
growing seasons become longer
• Exacerbated water quality issues associated with dissolved oxygen levels,
increased algal blooms, and increased concentrations of salinity and other
constituents
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• Impacted habitats for temperature-sensitive fish and other life forms, and
increased susceptibility of aquatic habitats to eutrophication
Precipitation Pattern Changes
• Increased flooding (both coastal and inland) caused by more intense storms
• Changes to growth and life cycle patterns caused by shifting weather patterns
• Threats to soil permeability, adding to increased flood threat and decreased water
availability
• Reduced water supply caused by the inability to capture precipitation from more
intense storms, and a projected progressive reduction in average annual runoff
(though some models suggest that there may be some offset from tropical
moisture patterns increasingly moving northward)
• Increased turbidity caused by more extreme storm events, leading to increased
water treatment needs and impacts to habitat
• Increased wildfires with less frequent, but more intense rainfall, and possibly
differently timed rainfall through the year, potentially resulting in vegetation
cover changes
• Reduction in hydropower generation potential
Sea Level Rise
• Inundation and erosion of coastal areas (coastal bluffs in particular), including
coastal infrastructure
• Saline intrusion of coastal aquifers
• Increased risk of storm surges and coastal flooding and erosion during and after
storms
• Changes in near-shore protective biogeography such as loss of sand, tide pools,
wetlands, and kelp beds
Although the extent of these changes is uncertain, CBMWD, along with its member
agencies, is already planning ahead to ensure long lasting reliability of its source for its
retailers.
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PROJECTED CLIMATE CHANGE IMPACTS
Extensive research has been done on the future impacts due to climate change on the
State of California. The state released its latest research on climate, called the California’s
Fourth Climate Change Assessment (California Assessment), detailing the potential
impacts of climate change that affects California such as temperature, sea level rise,
droughts, and wildfires. The assessment utilizes historic data and the latest computer
models to analyze these potential impacts. Alongside with the California Assessment,
released regional assessments as well. The California Assessment for the Los Angeles
Region detail the major impacts of climate change in Los Angeles County as well as
Ventura, Orange, San Bernardino, and Riverside County. The LA Region report outlines the
key projected climate change impacts:
• Continued future warming over the LA region (max temperatures to increase by
4-5℉ by mid-century and 5-8℉ by late century)
• Extreme temperatures and number of extreme hot days is expected to increase
• Dry and wet extremes expected to increase
• Sea level projected to rise by 1-2 feet by mid-century and 8-10 feet by end of
century based on most extreme projections
• Increased likelihood of wildfires throughout southern California
TEMPERATURE
The LA Region report of the California Assessment anticipates temperatures to increase
throughout southern California. Studies indicated that based on historic records from 1896
– 2015 from the National Oceanic and Atmospheric Administration (NOAA) shows a trend
of annual average, maximum, and minimum temperature increase of around 0.16℃ per
decade. In recent years, the top five warmest years in terms of annual average
temperatures have occurred since 2012 where 2014 was the warmest followed by 2015,
2017, 2016, and 2012. Based on computer models (RCP4.5 and RCP8.5), the number of
extremely hot days is expected to increase. For instance, historical records at the Los
Angeles International Airport experiences nearly 15 days per year of temperatures equal
to or greater than 90℉. Models project that the number of days may increase to 50-90 of
such days per year by the end of the century.
PRECIPITATION
Precipitation for the LA region is also impacted by climate change. Based on historical
records, precipitation is flexible from year to year and only five storms are typically
observed per year making up roughly 50 percent of the annual precipitation total. As a
result, precipitation in the LA region shows no typical trend. Based on the LA Region report
of the California Assessment, dry and wet extremes are both expected to increase in the
future. Based on computer models (RCP8.5), some areas are expected to have increased
precipitation by 25-30 percent. Similarly, computer models also project increased periods
of extremely dry years by double or more by the end of the century. The extreme dry years
can lead to prolonged drought periods, significantly impacting water supplies within the
region.
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CLIMATE CHANGE IMPACTS TO WATER SUPPLY
Climate data has been recorded in California since 1858. Since then, California has
experienced several periods of severe drought: 1928-34, 1976-77, 1987-91, 2007-09, and
most recently in 2012-15. California has also experienced several periods of less severe
drought. The year 1977 is considered to be the driest year of record in the Four Rivers Basin
by DWR. These rivers flow into the Delta and are the source of water for the SWP. Southern
California sustained few adverse impacts from the 1976-77 drought, but the 1987-91
drought created considerably more concern.
The drought of 2007-09 resulted in significant impacts on the state's water supplies. SBx7-
7 was signed into law by Governor Schwarzenegger that requires mandatory water
conservation up to 20 percent by 2020. The recent drought in 2012-15 brought a
significant hit to the state’s water supplies. The drought strained reservoir levels all across
the state. The majority of the state’s reservoirs were all below average levels. To this day,
California is still in a recovery stage from the recent droughts.
In January of 2014, Governor Brown declared a state of emergency and directed state
officials to take all necessary actions to prepare for water shortages. As the drought
prolonged into 2015, to help cope with the drought mitigation, Governor Brown issued an
Executive Order in April 2015 that mandated a statewide 25 percent reduction in potable
water use from a baseline year of 2013.
As a result, water demands with CBMWD’s retail agencies has decreased as shown in
Figure 4.1. Since 2006, water demands have dropped for both imported and groundwater.
The severe low reservoir levels as well as groundwater levels caused water purveyors to
mandate strict water usage guidelines in efforts to conserve water.
Figure 4.1 – Total Usage by CBMWD Retail Agencies (2006-2018)
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Chapter 5 – Conservation Target Compliance
5.1 – General Description
Conservation Target Compliance involves evaluation of implementation of the California Water
Conservation Act of 2009 and whether or not targets were met. Documentation on historical water usage
to define a purveyor’s obligation to achieve water use reduction is required.
Water use baselines and targets are given in units of gallons per capita per day (GPCD). However, the
City’s demographic character as “exclusively industrial” does not support the use of population as a
reliable indicator of water use. Nonetheless, the City is constrained to report water use baselines and
targets in units of GPCD. Note that historical, current, and future population is considered to be static at
100. This effectively eliminates population as an impact on water demand, since the change in population
is zero. As a result, comparison of a water use target to actual water use is proportional to a volumetric
comparison of associated production target and actual production. The City’s responsibility to achieve its
2020 target water use is the same as every other purveyor’s responsibility; however, the target water use
itself will appear to be a statistical outlier compared to other purveyors.
It should be noted that the California Water Conservation Act of 2009 anticipated the complexities of
including industrial water use in a per capita water use calculation for heavily industrialized water systems.
Per CWC Section 10608.24(e):
When developing the urban water use target pursuant to Section 10608.20, an urban
retail water supplier that has a substantial percentage of industrial water use in its service
area, may exclude process water from the calculation of gross water use to avoid a
disproportionate burden on another customer sector.
The Water Conservation Act of 2009 provides a number of methodologies for calculating baseline and
target water use. All options were examined, and Method 4 was chosen. Table 5.1 provides a summary of
the results of the various approaches to calculating baseline and target water use.
Table 5.1 – Summary of Baseline and Target Water Use Calculations
Approach Baseline
(GPCD)
2020 Target
(GPCD)
Method 1 100,296 80,245
Method 1 (Excluding Process Wastewater) 55,699 47,759
Method 2 100,296 81,298
Method 2 (Excluding Process Wastewater) 55,699 44,761
Method 3 100,296 142
Method 4 100,296 89,809
The rest of this chapter provides supporting information regarding application of Method 4.
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5.2 – Updating Calculations from 2015 UWMP
The City did elect to update its 2010 calculations for of the 2020 urban water use target.
5.2.1 – Update of Target Method
As discussed in Section 5.1, Method 4 was chosen for calculating baseline and target water use. No
updates to this target method are required.
5.2.2 – Updating Baseline and Target GPCDs
No adjustments to the baseline or target water use are required.
5.2.3 – SB X7-7 Verification Form
The standardized tables in the SB X7-7 Verification Form have been completed as required and are
included in Appendix A.
5.3 – Baseline Periods
Based on City supply and demand records known as NEAT Water System Statistics, the 2020 water use
target was determined to be 100,296 GPCD.
Water Code Section 10608.20 (g)
(g) An urban retail water supplier may update its 2020 urban water use target in its 2015 urban
water management plan required pursuant to Part 2.6 (commencing with Section 10610).
Water Code Section 10608.20
(e) An urban retail water supplier shall include in its urban water management plan due in 2010...
the baseline daily per capita water use…along with the bases for determining those estimates,
including references to supporting data.
(g) An urban retail water supplier may update its 2020 urban water use target in its 2015 urban
water management plan required pursuant to Part 2.6 (commencing with Section 10610).
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5.3.1 – Determining Baseline GPCD
In 2008, 8.1% of retail water deliveries were recycled water. As a result, the baseline must be a continuous
10-year period. The City’s baseline period is a 10-year period ending in 2008, as shown in Table 5.2.
Table 5.2 – Baseline Per Capita Demand Calculation
Year Population Gross Water
Use (AFY)
Per Capita
Water Use
(GPCD)
1999 100 11,877 106,033
2000 100 12,232 109,197
2001 100 11,976 106,919
2002 100 11,263 100,546
2003 100 11,296 100,844
2004 100 11,708 104,526
2005 100 10,596 94,593
2006 100 10,616 94,776
2007 100 10,742 95,900
2008 100 10,040 89,630
Average 100,296
Note that all qualifying 10-year periods for baseline per capita water use were calculated. The 10-year
period shown in Table 5.2 provides the greatest advantage to the City in terms of its baseline calculation.
Water Code Section 10608.12
(b) “Base daily per capita water use” means any of the following:
(1) The urban retail water supplier’s estimate of its average gross water use, reported in gallons
per capita per day and calculated over a continuous 10-year period ending no earlier than
December 31, 2004, and no later than December 31, 2010.
(2) For an urban retail water supplier that meets at least 10 percent of its 2008 measured retail
water demand through recycled water that is delivered within the service area of an urban retail
water supplier or its urban wholesale water supplier, the urban retail water supplier may extend
the calculation described in paragraph (1) up to an additional five years to a maximum of a
continuous 15-year period ending no earlier than December 31, 2004, and no later than December
31, 2010.
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5.3.2 – Determining Target Confirmation
The 5-year average per capita water for determining confirmation is calculated at 98,128 GPCD, as shown
in Table 5.3.
Table 5.3 – Calculation of 5-Year Target
Year Population Gross Water
Use (AFY)
Per Capita
Water Use
(GPCD)
2003 100 11,296 100,844
2004 100 11,708 104,526
2005 100 10,596 94,593
2006 100 10,616 94,776
2007 100 10,742 95,900
Average 98,128
Note that all qualifying 5-year periods for confirmation of the baseline per capita water use were
calculated. The 5-year period shown in Table 5.3 provides the greatest advantage to the City in terms of
confirming its target per capita water use.
Water Code Section 10608.12
(b) (3) For the purposes of Section 10608.22, the urban retail water supplier’s estimate of its
average gross water use, reported in gallons per capita per day and calculated over a continuous
five-year period ending no earlier than December 31, 2007, and no later than December 31, 2010.
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5.4 – Service Area Population
Determining and projecting the Water Service Area population is a challenge for the following reasons:
• The Water Service Area was 100% built-out prior to 1990.
• There have been no changes to residential land use for many decades, and none are anticipated.
• Historical residential water use is less than 0.1% of total demand.
• Population growth is stagnant.
• The DWR population calculator produced inconsistent results for population within the service
area boundary.
Given the City’s nature as an "exclusively industrial" city, population is not a factor in the City’s historical,
current, or projected water use.
In order to avoid skewing the results of per capita demand calculations, a constant population of 100 was
used for all periods. This concept has been discussed with and approved by DWR.
Water Code Section 10608.20
(e) An urban retail water supplier shall include in its urban water management plan due in
2010…the baseline per capita water use…along with the bases for determining those estimates,
including references to supporting data.
(f) When calculating per capita values for the purposes of this chapter, an urban retail water
supplier shall determine population using federal, state, and local population reports and
projections.
Water Code Section 10644
(a)(2) The plan…shall include any standardized forms, tables or displays specified by the
department.
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5.5 – Gross Water Use
Gross water use for each year in the baseline periods is shown in Table 5.2. Deducting process water did
not result in an advantage for the City, as shown in Table 5.1.
Water Code Section 10608.12
(g) “Gross Water Use” means the total volume of water, whether treated or untreated, entering
the distribution system of an urban retail water supplier, excluding all of the following:
(1) Recycled water that is delivered within the service area of an urban retail water supplier or its
urban wholesale water supplier
(2) The net volume of water that the urban retail water supplier places into long term storage
(3) The volume of water the urban retail water supplier conveys for use by another urban water
supplier
(4) The volume of water delivered for agricultural use, except as otherwise provided in subdivision
(f) of Section 10608.24.
California Code of Regulations Title 23 Division 2 Chapter 5.1 Article
Section 596 (a) An urban retail water supplier that has a substantial percentage of industrial water
use in its service area is eligible to exclude the process water use of existing industrial water
customers from the calculation of its gross water use to avoid a disproportionate burden on another
customer sector.
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5.6 – 2020 Target
Per CWC 10608.20(g), the City updated the 2020 water use target in its 2015 UWMP using Method 4 as
outlined in Section 5.6. The updated baseline water use, 2015 interim water use target and 2020 water
use target are summarized in Table 5.4.
Table 5.4 – Baseline, Interim, and Target Water Use
Water Use GPCD
Baseline 100,296
2015 Interim Target 95,053
2020 Target 89,809
Water Code Section 10608.20
(e) An urban retail water supplier shall include in its urban water management plan due in 2010...
urban water use target, interim urban water use target,…along with the bases for determining
those estimates, including references to supporting data (10608.20(e)).
Water Code Section 10608.20
(g) An urban retail water supplier may update its 2020 urban water use target in its 2015 urban
water management plan…
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5.6.1 – Target Method Selection and Application
Target Method 4 (Savings by Water Sector) involves a series of calculations based on a 10-year average
per capita water use, and water deliveries for the fifth year of the 10-year average. The following
application is based on data associated with the 10-year period ending in 2008 and the methodology
provided in DWR’s Provisional Method 4 For Determining Water Use Targets (February 2011).
Step 1. Baseline Water Use and Midpoint Year
Baseline Per Capita Water Use for 10-year period ending in 2008: 100,296 GPCD
CII Water use for midpoint year (2003): 93,598 GPCD
Average CII Water Use for 10-year period ending in 2008: 90,276 GPCD
Step 2. Metering Savings
All City accounts are metered. There are no savings associated with metering.
Step 3. Indoor Residential Savings
Alternative 2 (Default): Indoor Residential Savings is 15 GPCD.
Step 4. CII Savings (Equation 5)
CII Savings,
GPCD =
Average
Baseline CII
Water Use,
GPCD
× 0.10
𝐶𝐼𝐼 𝑅𝑎𝑣𝑖𝑛𝑔𝑟=(0.10)(90,276 𝐹𝑃𝐶𝐶)≅9,028 𝐹𝑃𝐶𝐶
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Step 5. Landscape Irrigation and Water Loss Savings (Equations 2 and 6)
Landscape
Irrigation and
Water Loss
Sector Use
=
Baseline Per
Capita Water
Use
−
Standard
Indoor
Residential
Use
− CII Water
Use in 2004
𝐿𝑎𝑛𝑎𝑟𝑎𝑎𝑛𝑎 𝐼𝑟𝑟𝑖𝑔𝑎𝑟𝑖𝑛𝑛 𝑎𝑛𝑎 𝑊𝑎𝑟𝑎𝑟 𝐿𝑛𝑟𝑟 𝑅𝑎𝑎𝑟𝑛𝑟 𝑅𝑟𝑎= 100,296 −70 −93,598 =6,683 𝐹𝑃𝐶𝐶
Landscape
Irrigation and
Water Loss
Savings
=
Landscape
Irrigation and
Water Loss
Sector Use
× 0.216
𝐿𝑎𝑛𝑎𝑟𝑎𝑎𝑛𝑎 𝐼𝑟𝑟𝑖𝑔𝑎𝑟𝑖𝑛𝑛 𝑎𝑛𝑎 𝑊𝑎𝑟𝑎𝑟 𝐿𝑛𝑟𝑟 𝑅𝑎𝑣𝑖𝑛𝑔𝑟=(6,683)(0.216)≅1,444 𝐹𝑃𝐶𝐶
Step 6. Total Savings (Equation 3)
Total Savings = Metering
Savings +
Standard
Indoor
Residential
Savings
+ CII Savings +
Landscape
Irrigation and
Water Loss
Savings
𝑅𝑛𝑟𝑎𝑙 𝑅𝑎𝑣𝑖𝑛𝑔𝑟=0 +15 +9,028 +1,444 =10,487 𝐹𝑃𝐶𝐶
Step 7. 2020 Water Use Target (Equation 1)
2020 Water
Use Target =
Baseline Per
Capita Water
Use
− Total Savings
2020 𝑊𝑎𝑟𝑎𝑟 𝑅𝑟𝑎 𝑅𝑎𝑟𝑔𝑎𝑟=100,296 −10,487 =89,809 𝐹𝑃𝐶𝐶
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5.7 – Baselines and Targets Summary
The SB X7-7 verification tables, including detailed information about the baselines and targets, have been
completed as required and are included in Appendix A.
5.8 – 2020 Compliance Daily Per-Capita Water Use (GPCD)
As shown in Table 5.4, the 2020 water use target is 89,809 GPCD.
5.8.1 – Meeting the 2020 Target
In 2020, the City’s per-capita water use was 59,814 GPCD, which was lower than its 2020 target of 89,809
GPCD. Therefore, the City has achieved its 2020 water use target and is in compliance with SB X7-7.
Water Code Section 10608.12
(e) “Compliance daily per-capita water use” means the gross water use during the final year of the
reporting period…
Water Code Section 10608.20
(e) An urban retail water supplier shall include in its urban water management plan due in 2010 ...
compliance daily per capita water use, along with the bases for determining those estimates,
including references to supporting data.
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5.8.2 – Adjustments to 2020 Gross Water Use
There were no adjustments to the 2020 target for extraordinary events, economic adjustment, or weather
normalization.
5.9 – Future Reporting of Water Use Compliance
The City’s water use is tied to the economic cycle. This UWMP provides a projection through 2045;
during that time, the economic cycle will fluctuate independently of water conservation efforts,
population growth and weather. This subsection is intended to provide guidance in demonstrating
future water use compliance in the event of high water use intensity associated with a surge in
economic activity.
Following are (1) provisions of the California Water Code and associated regulation that deal with
adjusting compliance water use to account for changes in commercial and industrial activity, and (2)
historical data that establish economic trends impacting the City’s water use and implementation
strategies.
Water Code Section 10608.24
(d)(1) When determining compliance daily per capita water use, an urban retail water supplier may
consider the following factors:
(A) Differences in evapotranspiration and rainfall in the baseline period compared to the
compliance reporting period.
(B) Substantial changes to commercial or industrial water use resulting from increased business
output and economic development that have occurred during the reporting period.
(C) Substantial changes to institutional water use resulting from fire suppression services or other
extraordinary events, or from new or expanded operations, that have occurred during the reporting
period.
(2) If the urban retail water supplier elects to adjust its estimate of compliance daily per capita
water use due to one or more of the factors described in paragraph (1), it shall provide the basis
for, and data supporting, the adjustment in the report required by Section 10608.40.
Methodologies for Calculating Baseline and Compliance Urban Per Capita Water Use, Methodology
4 This section discusses adjustments to compliance-year GPCD because of changes in distribution
area caused by mergers, annexation, and other scenarios that occur between the baseline and
compliance years.
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5.9.1 – Statute and Regulation
In the event that water use exceeds the 2020 target of 10,860 GPCD due to increased commercial and
industrial activity, the City will have an opportunity to adjust its per capita water use to account for the
increase. Note that population for future reporting will remain constant at 100. Refer to Methodology 8
of Methodologies for Calculating Baseline and Compliance Urban Per Capita Water Use (February 2016)
for details on preparing the adjustment.
CWC Section 10608.24 provides the following option relative to the City circumstances:
(1) When determining compliance daily per capita water use, an urban retail water
supplier may consider the following factors:
(B) Substantial changes to commercial or industrial water use resulting from
increased business output and economic development that have occurred during
the reporting period.
(2) If the urban retail water supplier elects to adjust its estimate of compliance daily per
capita water use due to one or more of the factors described in paragraph (1), it shall
provide the basis for, and data supporting, the adjustment in the report required by
Section 10608.40.
Water Code Section 10608.12(d) defines “Commercial water user” as “a water user that provides or
distributes a product or service.”
Water Code Section 10608.12(h) defines “Industrial water user” as “a water user that is primarily a
manufacturer or processor of materials as defined by the North American Industry Classification System
code sectors 31 to 33, inclusive, or an entity that is a water user primarily engaged in research and
development.”
The following option is the most appropriate for the City’s case:
Adjustments to institutional water use resulting from new or expanded operations and
adjustments to commercial or industrial water use resulting from increased business
output and economic development.
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In the event the City’s future water use exceeds the 2020 water use target, the following steps and
calculations should be made (Methodologies for Calculating Baseline and Compliance Urban Per Capita
Water Use, pp. 59-62):
Adjustment 2 accounts for substantial changes to commercial, industrial or institutional
(CII) water use due to new or expanded institutional water use or increased commercial
and/or industrial business output and economic development. The increase in water use
due to economic activity should be as a result of factors outside of service area population
growth. Therefore, any adjustment may primarily be driven by institutions and businesses
that serve nonresident populations and customers. Examples include the expansion of a
college or university that draws students from outside the service area, a regional mall, or
a business making a product that is sold broadly.
To account for possible changes in water use between sectors (an industrial facility
becoming a commercial facility) water suppliers must first document that the percentage
reduction in CII water use between baseline years and the compliance year is less than the
percent reduction from the baseline water use required to meet the supplier’s water use
target. Water suppliers whose CII percentage reduction is greater than the water use
target percent reduction are not eligible for Adjustment 2.
Water suppliers must document that the increase in commercial, industrial or institutional
water use proposed for adjustment has increased due to new or expanded institutions, or
to increased business output and economic development. Water suppliers can document
the increase through measures such as institutional enrollments, employment statistics,
and statistics on business output or trade.
Step 1: Quantify CII Water Use Reduction
This step is intended to identify CII water use that may be eligible for adjustment. The
calculations also separate the effect of changes in CII water use due to new or expanded
institutions and economic development from that due to growth in population. Only the
former may be eligible for this adjustment.
1.1. Calculate daily CII water use per capita for both the baseline period and the
compliance year(s) using Methodology 7. Calculate the percentage reduction
achieved in CII daily per capita water use for the compliance year(s) compared to
the baseline period.
1.2. If the percentage reduction in CII daily per capita water use in the compliance
year(s) (from Step 1.1) equals or exceeds the target percentage reduction in
baseline GPCD, no economic adjustment can be made.
[Given that the City’s population is static for the purpose of these calculations, all increases
described in Step 1 will be due to economic development.]
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Step 2: Documentation of Basis and Supporting Data for the Adjustment
Water suppliers making the economic adjustment must provide both a narrative
description and numeric water use data to substantiate the adjustments. The data must
illustrate the specific changes in commercial, industrial, or institutional water use by
customer accounts where possible, between the baseline period and the compliance
year(s).
2.1 For substantial changes to institutional water use from new or expanded
operations:
2.1.1 Provide a narrative that identifies and documents new institutions
or existing institutions with expanded operations within the service area
that have caused institutional water use to increase significantly during
the reporting period.
2.1.2 Calculate the change in the compliance year’s institutional daily per
capita water use compared to that in the baseline period.
2.2 For substantial changes to commercial or industrial water use from increased
business output and economic development:
2.2.1 Provide a narrative that identifies and explains the increase in
commercial and industrial water use within the service area due to
increased business output and economic development.
2.2.2 Document the change in compliance year(s) daily commercial
and/or industrial water use per capita compared to that in the baseline
period.
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Step 3: Correlation with Institutional or Economic Development Indicators
Demonstrate that the increase in commercial, industrial, or institutional water use is
directly related to a net expansion in institutional operations, or a net increase in business
output and economic development between the supplier’s baseline period and compliance
year(s). This step is necessary to prove that the increase in CII use is driven by economic
factors and is not a result of service area population growth or change in water
management.
3.1 Provide the institutional or economic development indicators that correlate with the
increase in commercial, industrial, or institutional water use documented in Step 2.
Institutional or economic indicators include:
• Employment statistics that show net increases in the specific commercial,
industrial, or institutional sectors6.
• Net increase in institutional enrollment, census, employment, or occupancy.
• Net gain in measures of business output and economic development such as
production volume, sales tax revenue, U.S. Department of Commerce measures of
retail trade, or other indicators of manufacturing and wholesale activities7.
• Net gain in measures of non-resident population such as hotel occupancy rates,
or measures of consumer expenditures such as attendance at entertainment
venues.
• Net increase in commercial sector activities due to an extraordinary mega-event,
such as hosting the Olympic Games or Super Bowl, during the compliance year.
• Other economic indicators.
3.2 Adjust any economic indicators measured in dollars for inflation by using the Consumer
Price Index (CPI) (reference to specific CPI series, such as USACPIBLS).
Step 4: Document CII Water Use Reduction Programs and Efforts
Describe, in the demand management section of the supplier’s urban water management
plan or through the California Urban Water Conservation Council BMP reports submitted
in lieu of the UWMP Demand Management Measures (DMM) section, the CII demand
management measures the water supplier has implemented. Water suppliers not
implementing CII DMMs are not eligible for the compliance year economic adjustment.
Step 5: Calculate the Economic Adjustments due to New or Expanded Institutions or
Increased Business Output and Economic Development
To calculate the compliance daily per capita water use adjusted for economic activity,
subtract the net change in commercial daily per capita water use, institutional daily per
capita water use, or industrial daily per capita water use (from Step 2.1.2 or 2.2.2) from
the unadjusted compliance year daily per capita water use.
6 Employment Development Department publishes monthly labor force data by county.
7 Board of Equalization publishes annual reports on local sales tax distribution by city.
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5.9.2 – Economic Trends
The economic trend that would support an adjustment to future water use compliance is manufacturing
labor.
Detailed manufacturing labor trends by sector are provided by the Labor Market Information Division of
the California Employment Development Department8. Given that the City’s small population is not a
factor in labor trends, extending labor statics to the larger metropolitan area is appropriate as an indirect
indicator of industrial activity.
Figure 5.1 provides manufacturing employment trends for a large number of sectors with a presence in
the City.
Figure 5.1 – Trends in Manufacturing Employment
8 https://www.labormarketinfo.edd.ca.gov/
0
20,000
40,000
60,000
80,000
100,000
120,000
2000200120022003200420052006200720082009201020112012201320142015201620172018201920202021Number Employed in the Los Angeles/Long Beach/Glendale Metropolitan Area Primary Metal
Fabricated Metal Product
Machinery
Computer & Electronic Product
Electronic Instrument
Electrical Equipment & Appliance
Transportation Equipment
Aerospace Product & Parts
Furniture & Related Product
Household & Institutional Furniture
Miscellaneous Durable Goods
Food
Apparel
Cut & Sew
Paper
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These data represent the Los Angeles/Long Beach/Glendale Metro Area. A large portion of the City’s labor
force is assumed to live in this area. The period is consistent with development of the City’s baseline
calculations for its water use target. In the event an adjustment to actual water use is required in the
future to comply with the water use target, an uptick in any of these manufacturing labor trends should
be evident in the data set for the subject compliance year. Cross-referencing manufacturing employment
to high-intensity water users will serve to justify a future compliance water use adjustment.
It should be noted that mechanization is a common response to cost-reduction in recovering industrial
markets. It is possible, even likely, that water use for industrial processes will increase as demand for
manufacturing increases regardless of a corresponding increase in manufacturing labor. In such a case,
the City will document equivalent labor performed by machines in addition to actual labor.
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Chapter 6 – System Supplies
6.1 – General Description
System Supplies involve organizing and reducing historical water supply source data into pre-determined
categories and discussing the availability and sustainability of each source. Documentation on rights,
adjudications, agreements, and opportunities for current and projected sources are required.
Anticipated supply availability under a normal water year, single dry year, and droughts lasting at least
five years, as well as more frequent and severe periods of drought, are discussed in Section 7.2.
6.2 – Purchased or Imported Water
The City is a member agency of the Central Basin Municipal Water District and has access to purchase
imported water as needed.
Water Code Section 10631(b)
Identify and quantify, to the extent practicable, the existing and planned sources of water available
to the supplier [in five-year increments to 20 years or as far as data is available] providing
supporting and related information, including all of the following:
(1) A detailed discussion of anticipated supply availability under a normal water year, single dry
year, and droughts lasting at least five years, as well as more frequent and severe periods of
drought, as described in the drought risk assessment. For each source of water supply, consider any
information pertinent to the reliability analysis conducted pursuant to Section 10635, including
changes in supply due to climate change.
(2) When multiple sources of water supply are identified, a description of the management of each
supply in correlation with the other identified supplies.
(3) For any planned sources of water supply, a description of the measures that are being
undertaken to acquire and develop those water supplies.
Water Code Section 10631 (h)
An urban water supplier that relies upon a wholesale agency for a source of water shall provide the
wholesale agency with water use projections from that agency for that source of water in five-year
increments to 20 years or as far as data is available. The wholesale agency shall provide information
to the urban water supplier for inclusion in the urban water supplier’s plan that identifies and
quantifies, to the extent practicable, the existing and planned sources of water as required by
subdivision (b), available from the wholesale agency to the urban water supplier over the same five-
year increments, and during various water-year types in accordance with subdivision (f). An urban
water supplier may rely upon water supply information provided by the wholesale agency in
fulfilling the plan informational requirements of subdivisions (b) and (f).
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6.3 – Groundwater
The City overlies the Central Basin and is party to the Central Basin Third Amended Judgment. The City
has an Allowed Pumping Allocation (APA) of 7,539 AFY.
Water Code Section 10631(b)(4)
If groundwater is identified as an existing or planned source of water available to the supplier, all
of the following information:
(A) The current version of any groundwater sustainability plan or alternative adopted pursuant to
Part 2.74 (commencing with Section 10720), any groundwater management plan adopted by the
urban water supplier, including plans adopted pursuant to Part 2.75 (commencing with Section
10750), or any other specific authorization for groundwater management for basins underlying the
urban water supplier’s service area.
(B) A description of any groundwater basin or basins from which the urban water supplier pumps
groundwater. For basins that a court or the board has adjudicated the rights to pump groundwater,
a copy of the order or decree adopted by the court or the board and a description of the amount of
groundwater the urban water supplier has the legal right to pump under the order or decree. For a
basin that has not been adjudicated, information as to whether the department has identified the
basin as a high- or medium-priority basin in the most current official departmental bulletin that
characterizes the condition of the groundwater basin, and a detailed description of the efforts being
undertaken by the urban water supplier to coordinate with groundwater sustainability agencies or
groundwater management agencies listed in subdivision (c) of Section 10723 to maintain or achieve
sustainable groundwater conditions in accordance with a groundwater sustainability plan or
alternative adopted pursuant to Part 2.74 (commencing with Section 10720).
(C) A detailed description and analysis of the location, amount, and sufficiency of groundwater
pumped by the urban water supplier for the past five years. The description and analysis shall be
based on information that is reasonably available, including, but not limited to, historic use records.
(D) A detailed description and analysis of the amount and location of groundwater that is projected
to be pumped by the urban water supplier. The description and analysis shall be based on
information that is reasonably available, including, but not limited to, historic use records.
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6.3.1 – Basin Description
Per DWR (Bulletin 118), the Central Basin occupies a large portion of the southeastern part of the Coastal
Plain of Los Angeles Groundwater Basin (Figure 3). The Central Basin is bounded on the north by a surface
divide called the La Brea high, and on the northeast and east by emergent less permeable Tertiary rocks
of the Elysian, Repetto, Merced, and Puente Hills. The southeast boundary between Central Basin and
Orange County Groundwater Basin roughly follows Coyote Creek, which is a regional drainage province
boundary. The southwest boundary is formed by the Newport Inglewood fault system and the associated
folded rocks of the Newport Inglewood uplift. The Los Angeles and San Gabriel Rivers drain inland basins
and pass across the surface of the Central Basin on their way to the Pacific Ocean.
Throughout the Central Basin, groundwater occurs in Holocene and Pleistocene age sediments at
relatively shallow depths. The Central Basin is historically divided into forebay and pressure areas. The Los
Angeles forebay is located in the northern part of the Central Basin where the Los Angeles River enters
the Central Basin through the Los Angeles Narrows from the San Fernando Groundwater Basin. The
Montebello forebay extends southward from the Whittier Narrows where the San Gabriel River
encounters the Central Basin and is the most important area of recharge. Both forebays have unconfined
groundwater conditions and relatively interconnected aquifers that extend up to 1,600 feet deep to
provide recharge to the aquifer system. The Whittier area extends from the Puente Hills south and
southwest to the axis of the Santa Fe Springs-Coyote Hills uplift and contains up to 1,000 feet of
freshwater-bearing sediments. The Central Basin pressure area is the largest of the four divisions, and
contains many aquifers of permeable sands and gravels separated by semi-permeable to impermeable
sandy clay to clay, that extend to about 2,200 feet below the surface. Throughout much of the Central
Basin, the aquifers are confined, but areas with semipermeable aquicludes allow some interaction
between the aquifers.
The main productive freshwater-bearing sediments are contained within Holocene alluvium and the
Pleistocene Lakewood and San Pedro Formations. Throughout most of the Central Basin, the near surface
Bellflower aquiclude restricts vertical percolation into the Holocene age Gaspur aquifer and other
underlying aquifers, and creates local semi-perched groundwater conditions. The main additional
productive aquifers in the Central Basin are the Gardena and Gage aquifers within the Lakewood
Formation and the Silverado, Lynwood, and Sunnyside aquifers within the San Pedro Formation.
Historically, groundwater flow in the Central Basin has been from recharge areas in the northeast, toward
the Pacific Ocean on the southwest. However, pumping has lowered the water level in the Central Basin
and water levels in some aquifers are about equal on both sides of the Newport-Inglewood uplift,
decreasing subsurface outflow to the West Coast Basin.
Many faults, folds, and uplifted basement areas affect the water-bearing rocks in the Central Basin. Most
of these structures form minor restrictions to groundwater flow. The strongest effect on groundwater
occurs along the southwest boundary to the Central Basin. The faults and folds of the Newport –
Inglewood uplift are partial barriers to movement of groundwater from the Central Basin to the West
Coast Basin. The La Brea high is a system of folded, uplifted and eroded Tertiary basement rocks. Because
the San Pedro Formation is eroded from this area, subsurface flow southward from the Hollywood Basin
is restricted to the Lakewood formation. The Whittier Narrows is an eroded gap through the Merced and
Puente Hills that provides both surface and subsurface inflow to the Central Basin. The Rio Hondo, Pico,
and Cemetery faults are northeast-trending faults that project into the gap and displace aquifers. The
trend of these faults parallels the local groundwater flow and does not act as a significant barrier to
groundwater flow.
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The City draws its groundwater supply from the Central Groundwater Basin. This source annually supplies
approximately 200,000 acre-feet of potable water to the area south of the Whittier Narrows to the Pacific
Ocean and from the Orange County line to the city of Compton.
In 1959, the State Legislature enacted the Water Replenishment Act, enabling the formation of the Water
Replenishment District of Southern California (WRD) as it is now known to be the permanent agency in
charge of replenishing both the Central and West Basins. The State Legislature has vested in WRD the
statutory responsibility to manage, regulate, replenish, and protect the quality of groundwater supplies
within its boundaries, of which the City of Vernon is included.
6.3.2 – Groundwater Management
6.3.2.1 – Basin-Wide Management
Central Basin is adjudicated. A copy of the Central Basin Third Amended Judgment is provided in Appendix
H.
Jurisdiction and authority over basin-wide groundwater management are the purview of the Water
Replenishment District of Southern California (WRD), who is designated as Watermaster.
The City has adjudicated an Allowable Pumping Allocation (APA) of 7,539 AFY. As a member to the
Judgment, the City has access to groundwater as follows:
§I.B.1
Each party…is enjoined and restrained in any Administrative Year commencing after the
date this Judgment becomes final from extracting from Central Basin any quantity of
Water greater than the party’s Allowed Pumping Allocation as hereinafter set forth next
to the name of the party in the tabulation appearing in Appendix 2 at the end of this
Judgment, subject to further provisions of this Judgment… Each party adjudged and
declared above not to be the owner of and not to have the right to extract groundwater
from Central Basin is enjoined and restrained in any Administrative Year commencing
after the date this Judgment becomes final from extracting any groundwater from Central
Basin, except as may be hereinafter permitted to any such party under this Judgment.
§I.B.2
The total extraction right for each party includes a party’s Allowed Pumping Allocation (to
the extent not transferred by agreement or otherwise), any contractual right acquired
through lease or other agreement to extract or use the rights of another party, and any
right to extract Stored Water or Carryover as provided in this Judgment. No party may
extract in excess of 140% of the sum of (i) the party’s Allowed Pumping Allocation and (ii)
the party’s leased water, except upon prior approval by the applicable body of
Watermaster as required pursuant to Section IV(J) as provided herein. Upon application,
the body specified in Section IV(J) shall approve a party’s request to extract water in excess
of such limit, provided there is no Material Physical Harm. Requests to extract water in
excess of such limit shall be reviewed and either approved or denied within thirty (30) days
of such request.
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6.3.2.2 – Local Management
With respect to local groundwater management options for the City, the following recommendations
were published in the 2005 Hydrogeological Evaluation of the City of Vernon Groundwater Supplies:
• Due to the high potential for contamination being introduced into the groundwater from the
many industries in the City, it is advisable to spread out the location of wells in order to lessen the
risk of potential impacts. Wells that will be pumped simultaneously should be spaced at least
1,300 feet apart to prevent interference between wells; and wells not pumping simultaneously
should be spaced at least 800 ft apart. Wells located too close to each other or a well that pumps
excessively will cause a localized cone of depression to develop whereby groundwater gradients
will be altered and ultimately groundwater will flow towards these wells.
• A Drinking Water Source Assessment Protection Program for City wells should be developed to
inform the City’s Health and Environmental Control Department as to the location of potential
groundwater percolation capture zones. The City should ensure that the industries within these
zones are aware that they have the potential to impact the City’s groundwater supply.
• Historical data provided by the City showed evidence of pumping levels being recorded instead of
true static levels. In order to obtain static levels, it is recommended that the well pump be turned
off for at least six hours prior to a level being recorded. The amount of recovery time allowed
before each measurement should also be recorded together with the depth to water.
• Installation of a permanent pressure transducer is recommended in each well where one does
not already exist to collect groundwater level measurements. Access into the wells may be a
problem in some instances where the pump base does not have port access for sounders.
Possibilities to allow a pressure transducer to be installed into the wells include retrofitting the
well with a dedicated sounding tube by strapping a PVC tube onto the pump column.
• To assist in groundwater management of the City’s groundwater resources, a Groundwater
Monitoring and Management Plan is an essential document that incorporates a standard
methodology for the collection of data in sufficient quantities and of adequate quality to enable
informed decisions regarding the management of the groundwater resources in the City’s service
area. The types of data to be collected include groundwater levels, groundwater production, and
groundwater quality.
• For on-going groundwater management, a groundwater flow model could be developed for the
City area. The model can be used to predict the actual interference effects between wells,
evaluate groundwater flow direction changes due to pumping, groundwater level changes in
response to various operational scenarios and potential movement of contaminants using particle
tracking. The flow model could also be used to predict future groundwater conditions for up to
20 years into the future.
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6.3.3 – Historical and Projected Pumping
Historical pumping from Central Basin for the past five years is provided in Table 6.1.
Table 6.1 – Historical Pumping from the Central Basin
Year 2016 2017 2018 2019 2020
Production (AFY) 6,098 6,566 6,569 5,852 6,127
Projected pumping from Central Basin in future years is estimated to be 7,539 AFY, which is equal to the
City’s APA.
6.4 – Surface Water
The City has no surface water supply.
6.5 – Stormwater
The City does not divert stormwater for capture purposes.
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6.6 – Wastewater and Recycled Water
Currently, all wastewater generated in the City is collected in local sewer lines and discharged into the
regional sewer system maintained by the Los Angeles County Sanitation Districts (LACSD), where it is
ultimately treated at a regional wastewater treatment plant in the City of Cerritos, and then sent back to
the City in the form of reclaimed water.
Water Code Section 10633
The plan shall provide, to the extent available, information on recycled water and its potential for
use as a water source in the service area of the urban water supplier. The preparation of the plan
shall be coordinated with local water, wastewater, groundwater, and planning agencies that
operate within the supplier’s service area, and shall include all of the following:
(a) A description of the wastewater collection and treatment systems in the supplier’s service area,
including a quantification of the amount of wastewater collected and treated and the methods of
wastewater disposal.
(b) A description of the quantity of treated wastewater that meets recycled water standards, is
being discharged, and is otherwise available for use in a recycled water project.
(c) A description of the recycled water currently being used in the supplier’s service area, including,
but not limited to, the type, place, and quantity of use.
(d) A description and quantification of the potential uses of recycled water, including, but not
limited to, agricultural irrigation, landscape irrigation, wildlife habitat enhancement, wetlands,
industrial reuse, groundwater recharge, indirect potable reuse, and other appropriate uses, and a
determination with regard to the technical and economic feasibility of serving those uses.
(e) The projected use of recycled water within the supplier’s service area at the end of 5, 10, 15, and
20 years, and a description of the actual use of recycled water in comparison to uses previously
projected pursuant to this subdivision.
(f) A description of actions, including financial incentives, which may be taken to encourage the use
of recycled water, and the projected results of these actions in terms of acre-feet of recycled water
used per year.
(g) A plan for optimizing the use of recycled water in the supplier’s service area, including actions
to facilitate the installation of dual distribution systems, to promote recirculating uses, to facilitate
the increased use of treated wastewater that meets recycled water standards, and to overcome
any obstacles to achieving that increased use.
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6.6.1 – Recycled Water Coordination
It is the City’s philosophy that recycled water shall be used within the jurisdiction wherever its use is
economically justified, financially and technically feasible, and consistent with legal requirements,
preservation of public health, safety, and welfare of the environment.
To that end, the City has previously completed the task, in coordination with CBMWD, of evaluating
potential recycled water use within the service area as a precursor to continued development of the
Southeast Water Reliability Project. Special care was taken to exclude potential recycled water use from
various industrial processes involving food processing. Vernon is satisfied that CBMWD, who is the lead
agency in the Central Basin for the development and distribution of recycled water, is aware of all
potential recycled water use within the service and that CBMWD makes use of this knowledge in the
justification for the expansion of the recycled water system, future rate structure and phasing of
implementation.
Water Code Section 10633
The plan shall provide, to the extent available, information on recycled water and its potential for
use as a water source in the service area of the urban water supplier. The preparation of the plan
shall be coordinated with local water, wastewater, groundwater, and planning agencies that
operate within the supplier’s service area…
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6.6.2 – Wastewater Collection, Treatment and Disposal
Per the Vernon General Plan, the City owns its own sewage collection system which discharges into the
system managed by the Los Angeles County Sanitation Districts (LACSD). The majority of the City lies
within District 23, but also contains territory in Districts 1 and 2. These Districts, along with more than a
dozen others, are signatories to the Joint Outfall System (JOS) which provides for the operation and
maintenance of an interconnected system of wastewater collection, treatment, reuse, and disposal
facilities across a large portion of the urban region.
The JOS includes the following water reclamation plants (WRP):
• The Joint Water Pollution Control Plant (Carson)
• Whittier Narrows WRP (South El Monte)
• Los Coyotes WRP (Cerritos)
• San Jose Creek WRP (Industry)
• Long Beach WRP (Long Beach)
• Pomona WRP (Pomona)
• La Cañada WRP (La Cañada-Flintridge)
The City generated an estimated 6,612 AFY of wastewater in 2020. Per the Fiscal Year 2018-19 Thirtieth
Annual Status Report on Recycled Water Use prepared by the Los Angeles County Sanitation Districts, the
JOS produced a total effluent of 434,335 AFY. Of that total, 135,523 AFY met Title 22 standards for recycled
water and 87,003 AFY was reused.
Recycled water supply for the CBMWD distribution system originates at the San Jose Creek WRP and the
Los Coyotes WRP. Per the CBMWD 2020 Draft UWMP:
CBMWD’S SOURCE WATER
The source of CBMWD’s recycled water comes from LACSD treated wastewater. Central
Basin does not collect or treat its municipal wastewater. LACSD operates six water
reclamation plants (WRPs) in the Los Angeles Basin producing approximately 593 MGD of
secondary effluent. Approximately one-third of the secondary effluent undergoes
additional treatment for non-potable uses such as recycled water.
CBMWD purchases a portion of this recycled water from the Los Coyotes WRP and the San
Jose Creek WRP. These plants provide approximately 137 MGD of Title 22 tertiary treated
water for distribution. Under the March 11, 2015 Agreement for Purchase and Sale of
Recycled Water with LACSD, CBMWD is allotted 20.54 MGD (23,000 AFY) of recycled water
through 2017, but the allotment will decrease to 9.38 MGD (10,500 AFY) after 2017.
CBMWD has never exceeded 5.27 MGD (5,900 AFY). LACSD looks to beneficially reuse all
Water Code Section 10633(a)
A description of the wastewater collection and treatment systems in the supplier’s service area,
including a quantification of the amount of wastewater collected and treated and the methods of
wastewater disposal.
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of its recycled water and the Agreement with CBMWD reflects a reasonable growth
margin to allow for increases in demand and new customers. A detailed description of the
two WRP’s are provided below.
San Jose Creek Water Reclamation Plant
The San Jose Creek WRP is located in unincorporated Los Angeles County adjacent to the
City of Whittier. The San Jose Creek WRP was built in the early 1970’s and serves a large
residential population of approximately one million people. The WRP has a wastewater
treatment capacity of 100 MGD and approximately 62.52 MGD of recycled water is
produced for use at locations throughout the region. Over 130 sites are served that provide
groundwater recharge at the San Gabriel River and Rio Hondo Spreading Grounds as well
as irrigation of parks, schools and greenbelts. In FY 18 – 19, approximately 36 MGD of the
recycled water from San Jose Creek WRP was sent to recharge the Central Basin
groundwater aquifer.
Los Coyotes Water Reclamation Plant
The Los Coyotes WRP is located in Cerritos serving a population of 370,000 people. The
WRP has a wastewater treatment capacity of 37.5 MGD and produces approximately
21.20 MGD of recycled water that is used at over 270 sites throughout the region. The
recycled water provides irrigation for schools, golf courses, parks, nurseries and greenbelts
as well as industrial use at local companies for carpet dying and concrete mixing. The
amount of wastewater collected and treated by the two WRP’s is expected to remain
relatively consistent during the next 20 years despite population increases. According to
LACSD analysis, population increases are not projected to be significant enough to make
it economically feasible to expand the WRP’s. Since 1999, LACSD’s effluent has been
decreasing annually due to conservation efforts and economic conditions. Based on
LACSD’s “FY 2018 - 19 Annual Report on Recycled Water”, the San Jose Creek WRP is
treating wastewater at approximately 56 percent below the plant capacity and the Los
Coyotes WRP is treating wastewater at approximately 50 percent below its capacity.
CBMWD does not directly treat or discharge any wastewater as they are a wholesaler.
Generally, CBMWD provides irrigation to parks, golf courses, schools, nurseries, freeway
and street medians, slopes, and other greenbelt areas. Various industries, such as the
Shaw- Tufted Carpet Mill use recycled water for carpet and textile dyeing, metal finishing,
concrete mixing, cooling tower supply, and other process water use. Industrial uses include
but are not limited to concrete mixing (Robertson’s Ready-Mix in Paramount and Santa Fe
Springs), sand mold manufacturing process (Pacific Alloy Castings in South Gate), cooling
plant operations at co-gen facilities (Metropolitan State Hospital in Norwalk), and power
plant cooling (Malburg Power Plant in Vernon).
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6.6.3 – Recycled Water System Description
6.6.3.1 – City-Level Description
The City purchases recycled water from CBMWD for the on-site cooling towers of the Malburg Generation
Station power plant. In order to provide this service, the City has constructed approximately 10,000 linear
feet of recycled water pipeline, capable of supplying recycled water from CBMWD to the station. The City
has entered into an agreement with CBMWD to provide recycled water to the station. In the event that
the recycled water supply is interrupted, this agreement stipulates that CBMWD will increase the supply
of Tier 2 imported potable water to compensate for any disruption of recycled water, regardless of the
drought conditions in Central Basin. The Malburg station uses approximately 800 AFY.
6.6.3.2 – Regional Description
Per the CBMWD 2020 Draft UWMP:
RECLYCLED WATER SYSTEM
CENTURY / RIO HONDO SYSTEM
CBMWD’s regional water recycling program is comprised of two distribution systems: E.
Thornton Ibbetson Century Water Recycling Project (Century Distribution System) and the
Esteban Torres Rio Hondo Water Recycling Project (Rio Hondo Distribution System). These
distribution systems are interconnected to operate as one recycled water supply system
to deliver recycled water for landscape irrigation, commercial, and industrial uses
throughout the CBMWD service area.
Water Code Section 10633 (c)
A description of the recycled water currently being used in the supplier’s service area, including, but
not limited to, the type, place, and quantity of use.
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CBMWD’s recycled water system is comprised of over 80 miles of pipeline with diameters
ranging from 4-inch to 48-inch pipelines, three pumping stations owned by CBMWD, one
pump station owned by the City of Cerritos, and service laterals. Figure 6.1 shows a map
of CBMWD’s Recycled Water system.
Figure 6.1 – CBMWD Recycled Water System
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The Century Distribution System began delivering recycled water in 1992. The system
currently delivers tertiary treated recycled water from LACSD’s Los Coyotes WRP and
serves the Cities of Bell, Bellflower, Bell Gardens, Compton, Cudahy, Downey, Lakewood,
Huntington Park, Lynwood, Norwalk, Paramount, Santa Fe Springs, South Gate, and
Vernon.
In 1994, the Century Distribution System was extended into the northern portion of
CBMWD’s service area. The extension, known as the Rio Hondo Distribution System,
delivers tertiary treated recycled water from LACSD’s San Jose Creek WRP and serves the
Cities of Pico Rivera and Whittier in additional to all cities by the Los Coyotes WRP.
In FY 2019-20, CBMWD’s recycled water system delivered approximately 4,492 AF of
water for non- potable uses. Over the next 25 years it is anticipated that CBMWD will
increase its sales with new connections. CBMWD works toward connecting new customers
to its recycled water system every year to further reduce demands on imported potable
water.
A map of the CBMWD recycled water system in the vicinity of the City is shown in Figure 6.2.
Figure 6.2 – CBMWD Recycled Water System (City of Vernon Vicinity)
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6.6.4 – Potential, Current and Projected Recycled Water Uses
The City has one recycled water customer, the Malburg Power Plant.
Expansion of the recycled water system is the purview of CBMWD. There is no expansion planned within
the City’s Water Service Area at this time.
Per the CBMWD 2020 Draft UWMP:
RECYCLED WATER USE
Landscape irrigation constitutes about the majority of CBMWD’s current recycled water
use; therefore, water sales are highly impacted by rainfall in the region. The amount of
recycled water supplied by CBMWD from FY 2005-20 has totaled more than 70,800 AF.
CBMWD anticipates recycled water sales to increase in the future as more customers
switch from potable water to recycled water due to the supply reliability and the economic
incentives associated with converting from potable to recycled water.
Recycled water sales peaked between FY 2006-08 and again between FY 2012-15. The FY
2012-15 peak took place during a multi-year drought; however, after the FY 2012-15 peak,
Recycled water sales declined with a minor spike in FY 2018. CBMWD still anticipates large
increases in sales over the next five to ten years with completion of capital improvement
projects that expand the system along with connections to new customers throughout the
service area.
POTENTIAL RECYCLED WATER USE
Recycled water use is expected to increase among cities, water agencies and
businesses/industries. The increasing cost of imported water makes recycled water more
desirable. CBMWD will continue to pursue cost effective projects within its service area
and in partnership with neighboring agencies. Efforts are currently focused on expanding
the existing regional system that CBMWD receives an incentive payment from MWD for
every AF delivered up to 23,000 AFY through 2017.
Although there is potential to increase recycled water use in CBMWD, there are challenges
and limitations to connect new customers. These challenges include proximity to recycled
water pipelines, capacity and pressure required to serve each customer, and potable to
Water Code Section 10633
(b) A description of the quantity of treated wastewater that meets recycled water standards, is
being discharged, and is otherwise available for use in a recycled water project.
(d) A description and quantification of the potential uses of recycled water, including, but not
limited to, agricultural irrigation, landscape irrigation, wildlife habitat enhancement, wetlands,
industrial reuse, groundwater recharge, indirect potable reuse, and other appropriate uses, and a
determination with regard to the technical and economic feasibility of serving those uses.
(e) The projected use of recycled water within the supplier’s service area at the end of 5, 10, 15, and
20 years, and a description of the actual use of recycled water in comparison to uses previously
projected pursuant to this subdivision.
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recycled water conversion costs. These challenges play a significant role in the growth of
recycled water and the ability to connect new customers which dictates when and how
much recycled water will be used in the future.
In 2012, the Master Plan identified and prioritized areas within CBMWD’s service area
where recycled water has the potential to expand. Although the Master Plan is currently
being updated and could influence CBMWD’s near and long-term projections, the goal to
maximize recycled water use throughout the service area will not change. Partnerships
with neighboring agencies have already resulted in projects that expand the CBMWD
system and sales beyond its service area limits.
6.6.5 – Planned vs. Actual Recycled Water Use
The 2015 UWMP projected the City’s recycled water use in 2020 at 800 AFY. The actual 2020 volume
delivered was 773 AFY.
6.6.6 – Actions to Encourage and Optimize Future Recycled Water Use
CBMWD administers the recycled water program within its sphere of influence, which includes the City’s
Water Service Area. The City works cooperatively with CBMWD, but defers to the wholesaler regarding
optimization of future recycled water use.
CBMWD is working with other wholesalers to increase access and distribution of recycled water on a
regional basis. Per the CBMWD 2020 Draft UWMP:
CARSON ADVANCED WATER TREATMENT PLANT
With changing conditions in the CRA and SWP supplies, imported water has continued to
be restricted. In order to maintain a sustainable water supply for Los Angeles and
surrounding communities, MWD is determining the feasibility of advanced water
treatment of wastewater to be used for groundwater recharge in order to offset a portion
of MWD’s imported water demand. MWD has partnered with LACSD since 2010 to
determine the potential demands, technical and regulatory constraints of indirect potable
reuse (IPR), and to estimate costs associated with the system (MWD Board of Directions
Water Code Section 10633
The plan shall provide, to the extent available, information on recycled water and its potential for
use as a water source in the service area of the urban water supplier… and shall include the
following:
(g) A plan for optimizing the use of recycled water in the supplier’s service area, including actions
to facilitate the installation of dual distribution systems, to promote recirculating uses, to facilitate
the increased use of treated wastewater that meets recycled water standards, and to overcome
any obstacles to achieving that increased use.
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Special Committee on Desalination and Recycling, March 2010). LACSD’s “Status Report
on Recycled Water from 2010-2011” presented the advanced water treatment concept as
a 200 MGD (224,110 AFY) facility but has since been revised. Pilot scale testing of
treatment systems for the demonstration facility went underway in 2010 with a $33,000
grant from the United States Bureau of Reclamation at LACSD’s Joint Water Pollution
Control Plant (JWPCP) in the city of Carson.
On September 21, 2015, MWD representatives presented the “Potential Regional Recycled
Water Supply Program” to the Board’s Water Planning and Stewardship Committee. The
presentation detailed the potential to develop a water supply to recharge groundwater
basins and increase the regions water supply portfolio with IPR similar to the Orange
County Water District’s Groundwater Replenishment System. The program would involve
a multi-phased approach with an initial 1 MGD demonstration plant, feasibility studies for
full scale facilities, and a financing plan followed by several incremental phases of full-
scale facilities up to 150 MGD. The full-scale facility would produce up to 150 MGD of
advanced treated water that would be injected into groundwater basins throughout the
Los Angeles region, as shown on Figure 6.3
Figure 6.3 – MWD’s Potential Full Scale Recycled Water Program
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6.7 – Desalinated Water Opportunities
The City is landlocked and has no opportunity to develop desalinated ocean water, independently. There
is no brackish water or groundwater underlying the City that would benefit from desalination.
As a member of the Gateway Regional Alliance, the Gateway Water Management Authority and the
Southeast Water Coalition, there may be opportunities in the future to partner with purveyors who have
access to these sources.
6.8 – Water Exchanges and Water Transfers
As a member of the Gateway Regional Alliance, the Gateway Water Management Authority, and the
Southeast Water Coalition, and as a party to the Central Basin Third Amended Judgment, there may be
opportunities for exchanges or transfers with other member agencies and parties.
6.8.1 – Groundwater Exchanges
Per the Judgment:
§III.C.2.
Any party not having existing facilities for the taking of imported water as of the beginning
of any Administrative Year, and any party having such facilities as of the beginning of any
Administrative Year who is unable, without undue hardship, to obtain, take, and put to
beneficial use, through its distribution system or systems existing as of the beginning of
the particular Administrative Year, imported water in a quantity which, when added to its
Allowed Pumping Allocation for that particular Administrative Year, will meet its
estimated needs for that particular Administrative Year, may purchase water from the
Exchange Pool, subject to the limitations contained in this Section III(C) (Subpart “C”
hereinafter).
Water Code Section 10631(g)
Describe the opportunities for development of desalinated water, including, but not limited to,
ocean water, brackish water, and groundwater, as a long-term supply.
Water Code Section 10631(c)
Describe the opportunities for exchanges or transfers of water on a short-term or long-term basis.
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6.8.2 – Groundwater Transfers
Per the Judgment:
§I.B.4.
Any rights decreed and adjudicated herein may be transferred, assigned, licensed or
leased by the owner thereof provided, however, that no such transfer shall be complete
until compliance with the appropriate notice procedures established by Watermaster.
§IV.F.
Irrespective of the category of storage utilized, each party to this Judgment may not
cumulatively have in storage at any time Stored Water totaling more than two hundred
percent (200%) of that party’s Allowed Pumping Allocation. Subject to the foregoing, the
right to produce Stored Water may be freely transferred to another party to this Judgment,
or as otherwise permitted herein.
§VI.B.
Subject to the other provision of this Judgment, and any rules and regulations of the
Watermaster requiring reports relative thereto, nothing herein contained shall be deemed
to prevent any party hereto from assigning, transferring, licensing or leasing all or any
portion of such water rights as it may have with the same force and effect as would
otherwise be permissible under applicable rules of law as exist from time to time.
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6.9 – Future Water Projects
The City has no independent future supply projects.
As a member of the Gateway Regional Alliance, the Gateway Water Management Authority, and the
Southeast Water Coalition, as a party to the Central Basin Third Amended Judgment, and as a member
agency of CBMWD, the City participates in regional supply projects.
At the wholesale level, CBMWD has plans to expand the recycled water system. Per the CBMWD 2020
Draft UWMP:
CURRENT RECYCLED WATER SUPPLY PROJECTS
West San Gabriel Recycled Water Expansion Project
CBMWD, Montebello Land Company, City of Montebello, San Gabriel Valley Water
Company, and the City of Monterey Park are looking to construct a pipeline to bring
recycled water supply into northern area of the City of Montebello, City of San Gabriel,
and the City of Monterey Park.
The recycled water pipeline will extend from the existing CBMWD system in the City of
Montebello. Currently, confirmed annual recycled water demand is estimated to be 800
AFY, including temporary irrigation estimated to be 200 AFY. Additional recycled water
connections and demand estimated as 1,500 AFY are currently being investigated and will
influence final pipe diameters and length. Final design diameter for the pipeline will be
between 16 inches and 30 inches in diameter. The present design, for confirmed demands
in the amount of 800 AFY, consist of 16-inch diameter piping for 20,500 (3.8 miles) linear
feet. A pump station and master meter will also be constructed for this project.
Phase 1 and phase 2 will bring a 16-inch to 30-inch diameter pipeline approximately 7,500
linear feet up to points of connection for the Montebello Hills Specific Plan, Montebello
Town Center, and the Shops at Montebello. Phase 3 will extend a 16-inch to 30-inch
diameter pipeline north 5,500 linear feet to serve Resurrection Cemetery and additional
sites currently being investigated. Phase 3 will extend the pipeline an additional 7,000
linear feet to serve additional sites out of CBMWD’s service area. Additional pipeline
alignments may be added to connect additional sites.
Water Code Section 10631 (f)
Include a description of all water supply projects and water supply programs that may be
undertaken by the urban water supplier to meet the total projected water use, as established
pursuant to subdivision (a) of Section 10635. The urban water supplier shall include a detailed
description of expected future projects and programs that the urban water supplier may implement
to increase the amount of the water supply available to the urban water supplier in normal and
single dry water years and for a period of drought lasting five consecutive water years. The
description shall identify specific projects and include a description of the increase in water supply
that is expected to be available from each project. The description shall include an estimate with
regard to the implementation timeline for each project or program.
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In early 2021, CBMWD connected the Montebello Hills project. For the rest of 2021,
recycled water will be used for dust suppression at a flow of 1,200 to 1,800 gpm for 10
hours per day at 5 days per week. Once dust suppression is completed, that system will be
utilized for irrigation of common space and parks.
La Mirada Recycled Water Expansion Project
It has been part of CBMWD’s Capital Improvement Projects Plan and Five (5) Year Recycled
Water Facilities Plan (Recycled Water Master Plan) to expand the existing recycled water
distribution system. Current drought conditions, new regulations, and available funding
through Proposition 1 have accelerated CBMWD’s expansion efforts.
A recycled water project CBMWD is currently looking to fast-track is the La Mirada
Recycled Water Expansion Project. CBMWD already has a willing city (La Mirada) and a
willing retail water agency (Suburban Water Systems) to provide the support necessary to
make the project viable.
CBMWD is planning to expand the existing recycled water distribution system in south
Santa Fe Springs into La Mirada to pick up several large landscaped facilities including La
Mirada Park, La Mirada Golf Course, La Mirada High School, Olive View Cemetery, Biola
University, La Mirada City Buildings, Behringer Park, and many more recycled water sites
that are currently being investigated. The number of potential recycled water customer
connections is estimated to be around 24 sites. These sites are estimated to use a
cumulative total of approximately 900 AFY of potable water for landscape irrigation.
Facilities needed consist of approximately 9,100 linear feet of 8-inch diameter piping;
10,100 linear feet of 12-inch diameter piping; and 20,900 linear feet of 16-inch diameter
piping. The recycled water expansion would start by connecting to CBMWD’s existing
recycled water pipelines at Bonavista Avenue, continue east on Gannet Street, go north
on Valley View Avenue, and then continue east through the most cost-effective route. The
design phase for this project has been completed, CBMWD is now looking for funding to
begin construction.
Gateway Cities Recycled Water Expansion Project
CBMWD and the cities of South Gate, Bell Gardens, and Lynwood are looking into
partnering to expand CBMWD’s existing recycled water system into their cities to supply
more sites with recycled water. Under a bundled project named the Gateway Cities
project, submitted for Proposition 84 funding, the benefit will be providing 453 AFY of
water savings and water quality improvement. This will be done by preparing planning,
design, and environmental documentation for pipelines that will extend the CBMWD
recycled water system. After completing this portion of the project, the partnering
agencies plan to look to Proposition 1 funding for the design and construction of the
project. The Project will provide 453 AFY of recycled water to irrigate 9 parks and schools,
reducing the need for potable water supply at these facilities.
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Bell Gardens
CBMWD and the City of Bell Gardens are looking to construct a pipeline to expand the
recycled water supply into the city. The recycled water pipeline will extend from the
existing CBMWD system located on Park Lane to sites located within the city. Currently,
confirmed annual recycled water demand is estimated to be 90 AFY. CBMWD has an
existing 16-inch pipeline on Park Lane before the cross section with Garfield Avenue.
CBMWD plans to extend a 16-inch pipeline for approximately 2,950 linear feet along
Garfield Avenue from Park Lane to Florence Place and a 12-inch pipeline for approximately
2,320 linear feet along Florence Place to Sudan Avenue to connect Suva Elementary
School. The plan is to also add an 8-inch pipeline along Emil Avenue from Florence Place
to connect Bell Gardens Park.
Lynwood
CBMWD and the City of Lynwood are looking into constructing a pipeline to expand the
recycled water supply into the city. The recycled water pipeline will extend from the
existing CBMWD system located on Wright road to sites located within the city. Currently,
confirmed annual recycled water demand is estimated to be 206 AFY. CBMWD has an 8-
inch pipeline along Wright Road. CBMWD plans to extend a 12-inch pipeline for
approximately 6,120 linear feet along Fernwood Avenue from Wright Road to Bullis Road
and a 12-inch pipeline for approximately 1,800 linear feet along Bullis Road to connect
Lynwood City Park, Linear Park, and Lynwood City Hall Complex.
South Gate
Currently, confirmed annual recycled water demand is estimated to be 236 AFY. Final
design diameter for the pipeline will be between 8-inch and 12-inches. The current design
for confirmed demands of 236 AFY, consist of 12-inch diameter piping for 14,000 linear
feet and 8-inch diameter piping for 1,860 linear feet. The City of South Gate Recycled
Water Line Extension will start with a 12-inch line from Burke Avenue to Alameda Street
and will serve Firestone Boulevard Medians, South Gate Middle School, San Gabriel
Avenue Elementary, South Gate High School, Willow Elementary School, the East Los
Angeles Community Education Center, and the Alameda Street Commercial Industrial
Development Complex. There will be an 8-inch line along California Avenue from City Place
to Southern Avenue that will serve South Gate City Hall and Cesar Chavez State Park. The
design phase for this South Gate project has been completed, and CBMWD is now looking
for funding to begin construction.
Pico Rivera Mines Avenue Recycled Water Expansion Project
CBMWD is looking to construct a pipeline to expand the recycled water supply within the
City of Pico Rivera. The recycled water pipeline will extend from the existing CBMWD
system located on Mines Avenue to sites located within the city. Previous capital projects
implemented a 12-inch and 8-inch recycled water lateral in Mines Avenue. Several
potential sites require additional expansion to be connected and supplied recycled water.
This project will connect the identified sites with estimated recycled water use of 275 AFY.
Additional construction needed for the previous Mains Avenue Phase 1B Project is a 6-
inch to 8-inch diameter recycled water lateral extending from Mines Avenue for 5,700
linear feet.
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City of Downey Recycled Water Expansion Project
CBMWD and the City of Downey are looking to construct a pipeline to expand the recycled
water supply into the city. The recycled water pipeline will extend from the existing
CBMWD system located on Garfield Avenue to sites located within the city. Currently,
recycled water demand is estimated to be 125 AFY. CBMWD currently has a 12-inch
pipeline along a public alley and Garfield Avenue. CBMWD plans to extend a 16- inch
diameter pipeline for approximately 2,250 linear feet along south boundary of Los Amigos
Golf Course and Quill Drive from Garfield Avenue and Gladys Street to Old River School
Road in order to connect Rancho Los Amigos Medical Center. Subsequently, to connect
Apollo Park, CBMWD plans to extend a 12-inch pipeline for approximately 2,810 linear
feet along Quill Drive from Old River School Road to the east side of Apollo Park. Bundling
this project with two other non-disadvantaged communities, such as the City of Pico Rivera
and the City of Santa Fe Springs, for Proposition 1 grant funding is currently being
investigated.
Pico Rivera North Recycled Water Expansion Project
This project expands the recycled water system into north of Pico Rivera. Water services
within the City of Pico Rivera is served by three water purveyors: 1) City of Pico Rivera; 2)
Pico Water District; and, 3) The San Gabriel Valley Water Company. Water is additionally
conveyed to the Rio Hondo Spreading Grounds and San Gabriel Spreading Grounds in Pico
Rivera. Recycled water demand is approximately 150 AFY. The expansion on the Northern
portion of the service area consists of approximately 3,000 linear feet of pipeline
construction. Project costs are estimated at $875,000 for the 3,000 linear feet of pipeline
construction. Planning, Design, Environmental, and Project/Construction Management
are estimated at 2.5 percent, 7 percent, 2 percent and 6.5 percent of construction cost
respectively.
Pico Rivera South Recycled Water Expansion Project
This project expands the recycled water system into south Pico Rivera. Water services
within the City of Pico Rivera is served by three water purveyors: 1) City of Pico Rivera; 2)
Pico Water District; and, 3) The San Gabriel Valley Water Company. Water is additionally
conveyed to the Rio Hondo Spreading Grounds and San Gabriel Spreading Grounds in Pico
Rivera. The expansion on the Southern portion of the service area consists of
approximately 7,000 linear feet of pipeline construction. Project costs are estimated at
$2,024,000 for the 7,000 linear feet of pipeline construction. Planning, Design,
Environmental, and Project/Construction Management are estimated at 2.5 percent, 7
percent, 2 percent and 6.5 percent of construction cost respectively. Recycled water
demand is approximately 200 AFY.
FUTURE RECYCLED WATER SUPPLY PROJECTS
AltAir Paramount Connection Project
CBMWD expects a large industrial customer (AltAir) to be connecting to their recycled
water system in the summer of 2023. AltAir/World Energy operates out of the Paramount
Refinery in the city of Paramount and has proposed to complete a conversion of the
refinery to manufacture only renewable fuels. Such a conversion would eliminate the
refining of crude oil at the facility, which is located at 14700 Downey Avenue. The demand
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for AltAir will be approximately 2.24 MGD. The supply would be provided from Los Coyotes
WRP that is owned and operated by Los Angeles County Sanitation District.
City of Monterey Park Recycled Water Expansion Project
This project expands the recycled water system into the City of Monterey Park. Water
services within the city is served by the City of Monterey Park, California Water Service
Company and San Gabriel Water Company. The expansion consists of approximately
11,500 linear feet of pipeline construction. Project costs are estimated at $3,675,000 for
the 11,500 linear feet of pipeline construction. Planning, Design, Environmental, and
Project/Construction Management are estimated at 2.5 percent, 7 percent, 2 percent and
6.5 percent of construction cost, respectively. Recycled water demand is approximately
750 AFY.
Central Basin Municipal Water District Recycled Water Distribution System Storage
Project
The existing CBMWD recycled water system is divided into three pressure zones. Zone 1 in
the north is supplied from the Rio Hondo Pump Station. To the south is Zone 2, which can
receive water from Zone 1 through a pressure-reducing valve or from the Cerritos Pump
Station through variable frequency drives currently set to maintain system pressures. Zone
3 lies in the western portion of the service area and is supplied through the Hollydale Pump
Station from Zone 2. All three pressure zones make a hydraulically closed system with no
storage to buffer customer demands. Since water can be fed from Zone 1 into Zone 2, but
not completely in the opposite manner, Rio Hondo Pump Station needs to be operational
whenever there are demands in Zone 1 downstream of the pump station in the Pico Rivera
and Montebello areas. Operation of the recycled water system cannot be evaluated with
an isolated view of only new customers due to the movement of water from one pressure
zone to another and with two water sources. Hydraulic analysis encompasses all aspects
of the recycled water system from pressure-reducing valve settings to pumping station
operations. System expansion, customer changes in operations and demands can
significantly alter system conditions experienced without storage.
In addition, recycled water supply is defined by a contract agreement with the Los Angeles
Sanitation Districts for two recycled water sources. CBMWD’s two recycled water supply
sources are the San Jose Creek Water Reclamation Plant and the Los Coyotes Water
Reclamation Plant. Overall volume limits can be increased over time and will need to be
considered for future expansion. In the future, storage will help prevent supply shortages
and balance demands from supply sources. Prospective expansion projects and demands
are emerging due to potable water conservation measures being implemented by the
State of California, and locally within CBMWD’s service area. To ensure a reliable regional
recycled water supply to offset potable water demands; CBMWD is looking to implement
storage in the form of storage tanks. The number, type, size, and locations for storage
tanks is yet to be determined. Piping and pumping needs are also to be determined.
CBMWD is looking to complete an in depth storage study that will include the additional
demands currently being developed under related expansion projects.
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6.10 – Summary of Existing and Planned Sources of Water
The City has access to groundwater from Central Basin, imported water from Central Basin Municipal
Water District and recycled water from Central Basin Municipal Water District.
This mix of sources is anticipated to break down roughly as shown in Table 6.2.
Table 6.2 – Estimated Sources of Supply
Source 2020 2025 2030 2035 2040 2045
Central Basin Groundwater 6,127 7,539 7,539 7,539 7,539 7,539
CBMWD Imported Water 573 305 305 305 305 305
CBMWD Recycled Water 773 800 800 800 800 800
Total Supply 7,473 8,644 8,644 8,644 8,644 8,644
Projected groundwater supply is equal to the Central Basin Allowable Pumping Allocation.
Projected imported water supply is the amount needed to meet future requirements.
Projected recycled water supply is equal to the estimated demand at the Malburg Power Plant.
Water Code Section 10631
(b) Identify and quantify, to the extent practicable, the existing and planned sources of water
available to the supplier over the same five-year increments described in subdivision (a), providing
supporting and related information, including all of the following…
(b)(2) When multiple sources of water supply are identified, a description of the management of
each supply in correlation with the other identified supplies.
(h) An urban water supplier that relies upon a wholesale agency for a source of water shall provide
the wholesale agency with water use projections from that agency for that source of water in five-
year increments to 20 years or as far as data is available. The wholesale agency shall provide
information to the urban water supplier for inclusion in the urban water supplier’s plan that
identifies and quantifies, to the extent practicable, the existing and planned sources of water as
required by subdivision (b), available from the wholesale agency to the urban water supplier over
the same five-year increments, and during various water-year types in accordance with subdivision
(f). An urban water supplier may rely upon water supply information provided by the wholesale
agency in fulfilling the plan informational requirements of subdivisions (b) and (f).
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6.11 – Special Conditions
6.11.1 – Climate Change Effects
The City and regional perspectives on climate change and impacts to water supply are discussed in Section
4.5. Currently, no changes in supply due to climate change are anticipated.
6.11.2 – Gateway Water Management Authority
Per the GWMA 2013 Integrated Regional Water Management Plan9 (IRWMP):
(pp. 11-14/15)
The climate change analysis of the Gateway Region has evaluated projected changes in
seasonal precipitation, maximum and minimum temperature, wind speed,
evapotranspiration, runoff, cooling and heating degree days, and in days with
precipitation exceeding 1 inch under three climate scenarios. A summary of projections
available in the scientific literature for sea level rise along the Los Angeles coastal, the
California, and global seas for mid-21st century have also been compiled and presented.
Based on the change analysis, four key water system vulnerabilities have prioritized for
the region including coastal aquifers, water supply, ecological functions and flooding. The
broad portfolio of projects developed in the region has been qualitatively evaluated to
assess how well each project contributes towards climate change adaptation, mitigating
greenhouse gas emissions and greater reliance on renewable energy. The greenhouse
contributions of water-related operations of each proposed project has also been
quantitatively evaluated, and projects with demonstrable GHG emissions-reduction
impacts have been identified and ranked. Other projects were identified as having possible
emissions-reduction or emissions-increase impacts but the net impact could not be
computed because the water saving have not been quantified. Some projects have no
measurable water savings or in changes emissions from water operations.
GWMA works collectively with its members to identify, prioritize and implement projects that address
climate change impacts and other regional issues. The IRWMP recommended one project in the City of
Vernon, potentially impacting access to groundwater supply: improvements to Production Well 22.
9 Gateway Regional Integrated Water Management Plan (2013)
https://gatewaywater.org/download/irwmp_general_documents/gateway -irwm-plan/Gateway-IRWMP-Report-
Final.pdf
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6.11.3 – Water Replenishment District of Southern California
The Water Replenishment District of Southern California (WRD) publishes monthly updates on the status
of the Central Basin. The update for May 2021 is provided in Appendix V. These updates are part of a
data collection effort to help reduce uncertainty related to climate change impacts on the Central Basin.
Per a Technical Bulletin10 published by WRD on climate change effects on local groundwater supply:
Impact on Groundwater Resources
A report11 by the DWR (2006) provides an excellent discussion on the potential impacts of
warming on our state’s water supply.
But, will climate change affect the groundwater supplies in the Central and West Coast
Basins, which provides about 40% of the total water demand for this area? Very simply,
no one knows for sure, but close monitoring, planning, and responses to changes will likely
be necessary. Warmer summers may cause drought, an increase in water demand, and a
decrease in water supply. Warmer winters may result in precipitation falling as rain
instead of snow, reducing the snow pack that is a natural reservoir for spring and summer
snow melt, and may increase the intensity of storm runoff that may overflow stream
channels, cause flooding, and cause more runoff losses to the oceans.
Northern California sea level rises may threaten the Bay Delta freshwater supplies,
reducing our imported water availability in Southern California. And, sea level rises down
here could threaten the Central and West Coast Basins with increased salt water intrusion.
So What Do We Do About It?
Water managers, water providers, and elected officials at the local, state, and federal level
are working together towards solutions. Additional scientific information and modeling is
needed to reduce the climate change uncertainties so that planning can be performed to
implement the necessary projects to meet future water needs. The importance of
maintaining and expanding the use of the Central and West Coast Basins as water supply
reservoirs is crucial. New and improved spreading grounds and conservation pools will
help capture as much storm water as possible to ensure a local supply of replenishment
water. Finding ways to decrease our reliance on imported water, increasing the use of
recycled water, maximizing groundwater storage, conserving water, and protecting the
basins from contamination due to salt water intrusion or other pollutants will ensure a
reliable supply of locally-derived groundwater. As the groundwater steward for the
Central and West Coast Basins, WRD is committed to working with others to find practical
and optimum solutions to ensure the future reliability of the local groundwater supplies in
the face of climate change.
The Technical Bulletin is provided in Appendix W.
10 WRD. (2007). Technical Bulletin: Will Climate Change Affect Groundwater in the Central and West Coast Basins?
Volume 10: Winter 2007.
https://www.wrd.org/sites/pr/files/TB10%20-%20Climate%20Change%20and%20Groundwater%20in%20the%20Central%20and%20West%20Coast%20Basins_0.pdf
11 California Department of Water Resources. (July 2006). Technical Memorandum Report: Progress on
Incorporating Climate Change into Management of California’s Water Resources .
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6.12 – Energy Intensity
Energy use in the water system falls into two categories: groundwater production and distribution.
Wells discharge directly into the system with a portion of production used to fill storage. Water is
pumped from storage into the system by booster pumps.
A summary of energy efficiency is provided in Table 6.3.
Table 6.3 – Summary of 2020 Energy Efficiency
Usage AF KWH KWH/AF
Production 6,687 167,440,408 25,040
Distribution 4,266 6,160,880 1,444
See Appendix T for more detail.
Water Code Section 10631.2. (a)
In addition to the requirements of Section 10631, an urban water management plan shall include
any of the following information that the urban water supplier can readily obtain:
(1) An estimate of the amount of energy used to extract or divert water supplies.
(2) An estimate of the amount of energy used to convey water supplies to the water treatment
plants or distribution systems.
(3) An estimate of the amount of energy used to treat water supplies.
(4) An estimate of the amount of energy used to distribute water supplies through its distribution
systems.
(5) An estimate of the amount of energy used for treated water supplies in comparison to the
amount used for nontreated water supplies.
(6) An estimate of the amount of energy used to place water into or withdraw from storage.
(7) Any other energy-related information the urban water supplier deems appropriate.
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Chapter 7 – Water System Reliability
7.1 – General Description
Water Shortage Reliability deals with establishing local authority to impose water use constraints on end
users in order to assure sustainability under stressful emergency and long-term water shortage
conditions.
7.2 – Water Service Reliability Assessment
7.2.1 – Constraints on Water Sources
7.2.1.1 – Constraints on Imported Water
CBMWD is sustainably managed. However, as member of Metropolitan they are subject to constraints on
supplies available via the State Water Project and the Colorado River Aqueduct. Per the CBMWD 2020
Draft UWMP:
IMPORTED WATER RELIABILITY (CBMWD TOTAL POTABLE SUPPLY)
MWD participates in the development of groundwater, groundwater recovery, recycled
water systems, desalination opportunities, and collection of urban return flows to
augment the reliability of the imported water system. There are various factors that may
impact reliability of supplies, such as legal, environmental, water quality, and climatic,
which are discussed below. MWD projects water supplies to meet full-service demands;
MWD’s 2020 UWMP finds that MWD is able to meet with existing supplies all full service
demands of its member agencies starting in 2025 through 2045 during normal years,
single dry year, and multiple dry years.
MWD’s 2015 Integrated Water Resources Plan (IRP) update describes the core resource
strategy used to meet full-service retail demands under all foreseeable hydrologic
conditions from 2020 through 2040. The foundation of MWD’s resource strategy for
achieving regional water supply reliability consists of developing and implementing water
resources programs and activities through its IRP preferred resource mix. This preferred
resource mix includes conservation, local resources, such as water recycling and
groundwater recovery, Colorado River supplies and transfers, SWP supplies and transfers,
in-region surface reservoir storage, in-region groundwater storage, out-of-region
banking, treatment, conveyance and infrastructure improvements. CBMWD is reliant on
Water Code section 10631 (b)(1)
A detailed discussion of anticipated supply availability under a normal water year, single dry year,
and droughts lasting at least five years, as well as more frequent and severe periods of drought, as
described in the drought risk assessment. For each source of water supply, consider any information
pertinent to the reliability analysis conducted pursuant to Section 10635, including changes in
supply due to climate change.
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MWD for all of its imported water. With the addition of planned supplies under
development, MWD’s 2020 UWMP finds that MWD will be able to meet full-service
demands from 2025 through 2045, even under a repeat of the worst drought. MWD’s five-
consecutive dry years is based on from 1988 to 1992, which represents as the driest five
consecutive year historic sequence for MWD’s water supply. In addition to meeting full-
service demands from 2025 through 2045, MWD projects reserve and replenishment
supplies to refill system storage. CBMWD’s supply reliability for base average, single dry,
and multiple-dry years are identical to that of MWD’s.
FACTORS IMPACTING RELIABILITY
The UWMP Act requires a description of the reliability of the water supply and vulnerability
to seasonal or climatic shortage. The following are some of the factors identified by MWD
that may have an impact on the reliability of MWD supplies.
Environment – Endangered species protection needs in the Sacramento-San Joaquin River
Delta result in operational constraints to the SWP system. The Bay-Delta’s declining
ecosystem caused by agricultural runoff, operation of water pumps and other factors led
to historical restrictions in SWP supply deliveries. SWP and CVP delivery restrictions due to
the biological opinions have reduced SWP and CVP supplies by approximately 5.2 MAF
since in 2008.
Legal – Listings of additional species under the Endangered Species Act and new
regulatory requirements could further impact SWP operations by requiring additional
export reductions, releases of additional water from storage, or other operational changes
impacting water supply operations. Additionally, any challenges to the QSA in the court
systems may have impacts on the Imperial Irrigation District and San Diego County Water
Authority transfer. If there are negative impacts, San Diego could become more dependent
on the MWD supplies. One such challenge was settled in 2013 upholding the validity of
the QSA.
Water Quality – Water imported from the CRA contains a high level of salts. The
operational constraint is that this water needs blending with SWP supplies to meet the
target salinity of 500 mg/L of TDS. Another water quality concern relates to the quagga
mussel. Controlling the spread and impacts of quagga mussels within the CRA requires
extensive maintenance and results in reduced operational flexibility.
Climate Change – Changing climate patterns may shift precipitation patterns and affect
water supply. Unpredictable weather patterns make water supply planning even more
challenging. The areas of concern for California include the reduction in Sierra Nevada
snowpack, increased intensity and frequency of extreme weather events, and rising sea
levels causing increased risk of levee failure.
Legal, environmental, and water quality issues may impact MWD supplies. It is felt,
however, that climatic factors would have more of an impact. Climatic conditions have
been projected based on historical patterns; however, severe pattern changes may occur
in the future.
MWD's 2020 UWMP anticipates supplies meeting demand for all climatic conditions
through 2045.
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7.2.1.2 – Constraints on Groundwater
Central Basin is sustainably managed by WRD. The basin has a large storage capacity. The basin is reliant
on imported water, regional stormwater capture and recycled water for replenishment. Each of these
sources has its own constraints; however, WRD’s diversified supply portfolio tends to reduce those
constraints.
7.2.1.3 – Constraints on Recycled Water
There is an oversupply of recycled water in Central Basin. However, there is currently insufficient
distribution infrastructure to reach all potential recycled water customers.
7.2.2 – Reliability by Year Type
As a party to the Central Basin Third Amended Judgment and as a member agency of CBMWD, the City
has the means to acquire the quantities of water necessary to support the anticipated commercial and
industrial activities within the Water Service Area under all demand conditions.
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7.2.3 – Water Service Reliability
It is not the City’s objective to predict the demand in a given year in the future. This is due to the
unpredictable nature of the economic cycle which the City must respond to. Rather, the City is prepared
to provide adequate supply as needed to support robust commercial and industrial activity within the
Water Service Area.
With this in mind, the City has a goal of achieving water reliability consistent with (1) a high level of water
use intensity in the commercial and industrials sectors, (2) the implementation of water conservation
activities, and (3) framing future demand in terms of compliance with the Water Conservation Act.
The City acknowledges that its primary goal is to support commercial and industrial activity with a
secondary goal of working toward compliance with its per capita water use target. Combining these goals
leads to a water use projection for any given year in the future as shown in Table 7.1.
Table 7.1 – Projected Demand
Source AFY
Single Family Residential 6
Multi-Family Residential 2
Commercial 4,600
Industrial 4,600
Other 252
Losses 600
Energy Production (Recycled Water) 800
Total Supply 10,860
Water Code Section 10635(a)
Every urban water supplier shall include, as part of its urban water management plan, an
assessment of the reliability of its water service to its customers during normal, dry, and multiple
dry water years. This water supply and demand assessment shall compare the total water supply
sources available to the water supplier with the long-term total projected water use over the next
20 years, in five-year increments, for a normal water year, a single dry water year, and a drought
lasting five consecutive water years. The water service reliability assessment shall be based upon
the information compiled pursuant to Section 10631, including available data from state, regional,
or local agency population projections within the service area of the urban water supplier.
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Achieving the demand projection shown in Table 7.1 is consistent with the City’s water use target:
(89,909 𝑔𝑎𝑙𝑙𝑛𝑛𝑟
𝑛𝑎𝑟𝑟𝑛𝑛∙𝑎𝑎𝑦)(100 𝑛𝑎𝑟𝑟𝑛𝑛𝑟)(𝐴𝐹
325,851 𝑔𝑎𝑙𝑙𝑛𝑛𝑟)(365 𝑎𝑎𝑦𝑟
𝑦𝑎𝑎𝑟)≅10,060 𝐴𝐹𝑌
𝑃𝑛𝑟𝑎𝑎𝑙𝑎 𝑊𝑎𝑟𝑎𝑟+𝑅𝑎𝑎𝑦𝑎𝑙𝑎𝑎 𝑊𝑎𝑟𝑎𝑟=10,060 𝐴𝐹𝑌+800 𝐴𝐹𝑌=10,860 𝐴𝐹𝑌
Note that the demand for potable water is higher than the City’s Allowable Pumping Rights of 7,539 AFY.
This means that the City will acquire only as much additional supply as needed to meet demand during
those years when potable water demand exceeds groundwater rights. Sources for the additional supply
include imported water from CBMWD and excess pumping from the Central Basin (the Central Basin
Adjudication allows members to pump up to 140% of their Allowable Pumping Rights).
7.2.3.1 – Average Year
Under all average years through 2045, projected water demand is 10,860 AFY and projected water supply
is 10,860 AFY, as shown in Table 7.2. There is no projected surplus or shortage.
Table 7.2 – Average Year Supply and Demand Assessment
Year 2025 2030 2035 2040 2045
Projected Average Year Supply 10,860 10,860 10,860 10,860 10,860
Projected Average Year Demand 10,860 10,860 10,860 10,860 10,860
Surplus 0 0 0 0 0
7.2.3.2 – Single Dry Year
Under all single dry years through 2045, projected water demand is 10,860 AFY and projected water
supply is 10,860 AFY, as shown in Table 7.3. There is no projected surplus or shortage.
Table 7.3 – Single Dry Year Supply and Demand Assessment
Year 2025 2030 2035 2040 2045
Projected Single Dry Year Supply 10,860 10,860 10,860 10,860 10,860
Projected Single Dry Year Demand 10,860 10,860 10,860 10,860 10,860
Surplus 0 0 0 0 0
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7.2.3.3 – Five Consecutive Dry Years
During the multiple dry year period from 2012 to 2016, the City declared a Phase II Water Supply Shortage
in Year 4 aimed at reducing water demand by 2%. In the event of a similar multi-year drought, the City
would anticipate implementing a Phase II Water Supply Shortage in Year 4 resulting a 2% reduction.
Supply and demand projections associated with multiple dry years is provided in Table 7.4. There is no
projected surplus or shortage.
Table 7.4 – Multiple Dry Year Supply and Demand Comparison
Dry Year 2025 2030 2035 2040 2045
First
Year
Supply 10,860 10,860 10,860 10,860 10,860
Demand 10,860 10,860 10,860 10,860 10,860
Surplus 0 0 0 0 0
Second
Year
Supply 10,860 10,860 10,860 10,860 10,860
Demand 10,860 10,860 10,860 10,860 10,860
Surplus 0 0 0 0 0
Third
Year
Supply 10,860 10,860 10,860 10,860 10,860
Demand 10,860 10,860 10,860 10,860 10,860
Surplus 0 0 0 0 0
Fourth
Year
Supply 10,643 10,643 10,643 10,643 10,643
Demand 10,643 10,643 10,643 10,643 10,643
Surplus 0 0 0 0 0
Fifth
Year
Supply 10,860 10,860 10,860 10,860 10,860
Demand 10,860 10,860 10,860 10,860 10,860
Surplus 0 0 0 0 0
7.2.4 – Regional Supply Reliability
The City is a member of the Gateway Regional Alliance, the Gateway Water Management Authority and
Southeast Water Coalition, and a member agency of CBMWD. These affiliates work collectively to
maximize the resources of the Central Basin.
Water Code Section 10620(f)
An urban water supplier shall describe in the plan water management tools and options used by
that entity that will maximize resources and minimize the need to import water from other regions.
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7.3 – Drought Risk Assessment
The City is built out and water use has stabilized since economic recovery from the 2008 recession at
approximately 7,200 AFY. The City has continuous access to 100% of its adjudicated pumping allocation
in the Central Basin (7,539 AFY) plus sufficient recycled water for cooling at the Malburg Power Plant, for
a total of approximately 8,339 AFY. Pumping in excess of adjudicated rights is assumed to be unavailable
a during long-term drought. Given these conditions, the City has adequate available supply to meet water
use requirements during an immediate five-year drought.
The Drought Risk Assessment is shown in Table 7.5.
Table 7.5 –Sources of Drought Risk Assessment Supply
Source Year 1 Year 2 Year 3 Year 4 Year 5
DRA Water Supply 8,339 8,339 8,339 8,339 8,339
DRA Water Use 7,200 7,200 7,200 7,200 7,200
Surplus Supply 1,139 1,139 1,139 1,139 1,139
The City has sufficient sources of supply to meet anticipated demand during an immediate five-year
drought.
Water Code Section 10635(b)
Every urban water supplier shall include, as part of its urban water management plan, a drought
risk assessment for its water service to its customers as part of information considered in
developing the demand management measures and water supply projects and programs to be
included in the urban water management plan. The urban water supplier may conduct an interim
update or updates to this drought risk assessment within the five-year cycle of its urban water
management plan update. The drought risk assessment shall include each of the following:
(1) A description of the data, methodology, and basis for one or more supply shortage conditions
that are necessary to conduct a drought risk assessment for a drought period that lasts five
consecutive water years, starting from the year following when the assessment is conducted.
(2) A determination of the reliability of each source of supply under a variety of water shortage
conditions. This may include a determination that a particular source of water supply is fully reliable
under most, if not all, conditions.
(3) A comparison of the total water supply sources available to the water supplier with the total
projected water use for the drought period.
(4) Considerations of the historical drought hydrology, plausible changes on projected supplies and
demands under climate change conditions, anticipated regulatory changes, and other locally
applicable criteria.
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Chapter 8 – Water Shortage Contingency Planning
8.1 – General Description
Water Shortage Contingency Planning deals with the imposition of water use constraints on end users in
order to assure sustainability under stressful emergency and long-term water shortage conditions.
8.2 – Water Supply Reliability Analysis
The Water Service Reliability Assessment is discussed in Section 7.2.
The City of Vernon adopted Ordinance No. 995 in 1991 (Appendix K), which enacted Article VI of Chapter
25 of the Code of the City of Vernon, “Water Conservation”, containing Code Sections 25.100 through
25.111. Minimum requirements were outlined in this Ordinance to protect the water supplies and to
establish standards for reductions in the use of water in the City of Vernon. The City’s “Water
Conservation” code was further amended in 2006 through the adoption of City Ordinance No. 1115
(Appendix L). Continuing the City’s proactive approach to water conservation, the City adopted Ordinance
No. 1161 (Appendix M) in October 2009, which further expanded the City’s water conservation efforts by
amending Article VI of Chapter 25 of the Code of the City of Vernon. This Ordinance established general
water waste provisions, as well as conservation measures for Phase I, Phase II and Phase III water
shortages. These shortages equate to water supply deficiencies of 20%, 30% and 50% and greater,
respectively. The City has developed a three stage rationing plan to invoke during declared water
shortages, in addition to specific water waste provisions mandated regardless of supply conditions. The
rationing plan includes mandatory rationing in order to obtain the associated customer reduction goal.
Citation from the City Code related to Water Conservation are provided throughout this chapter in
italicized print.
Water Code Section 10632(a)(1)
The analysis of water supply reliability conducted pursuant to Section 10635.
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8.3 – Annual Water Supply and Demand Assessment Procedures
The City communicates continuously with WRD to verify availability of groundwater from the Central
Basin. The City conducts regular maintenance of its wells and initiates improvements as needed.
The City uses a 3-year by month average to project current demand.
Water Code Section 10632(a)(2)
The procedures used in conducting an annual water supply and demand assessment that include,
at a minimum, both of the following:
(A) The written decision-making process that an urban water supplier will use each year to
determine its water supply reliability.
(B) The key data inputs and assessment methodology used to evaluate the urban water supplier’s
water supply reliability for the current year and one dry year, including all of the following:
(i) Current year unconstrained demand, considering weather, growth, and other influencing factors,
such as policies to manage current supplies to meet demand objectives in future years, as
applicable.
(ii) Current year available supply, considering hydrological and regulatory conditions in the current
year and one dry year. The annual supply and demand assessment may consider more than one dry
year solely at the discretion of the urban water supplier.
(iii) Existing infrastructure capabilities and plausible constraints.
(iv) A defined set of locally applicable evaluation criteria that are consistently relied upon for each
annual water supply and demand assessment.
(v) A description and quantification of each source of water supply.
Water Code Section 10632.1.
An urban water supplier shall conduct an annual water supply and demand assessment pursuant
to subdivision (a) of Section 10632 and, on or before July 1 of each year, submit an annual water
shortage assessment report to the department with information for anticipated shortage, triggered
shortage response actions, compliance and enforcement actions, and communication actions
consistent with the supplier’s water shortage contingency plan. An urban water supplier that relies
on imported water from the State Water Project or the Bureau of Reclamation shall submit its
annual water supply and demand assessment within 14 days of receiving its final allocations, or by
July 1 of each year, whichever is later.
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8.4 – Six Standard Water Shortage Levels
The City has developed three (3) Water Conservation Stages to address potential water shortage levels,
as identified in the 2015 UWMP. These correspond to the six standard water shortage levels mandated
for 2020 as summarized in Table 8.1.
Table 8.1 – Relationship Between 2015 Shortage Levels and 2020 WSCP Mandated Shortage Levels
2015 UWMP Stage Shortage Level 2020 WSCP
Level Shortage Level
Water Conservation Stage I < 20% (at discretion of City)
20 - 30% (mandatory)
1 ≤ 10%
2 10 - 20%
3 20 - 30%
Water Conservation Stage II 30 - 50% (mandatory)
4 30 - 40%
5 40 - 50%
Water Conservation Stage III
(Emergency Condition) > 50% (mandatory) 6 > 50%
Water Code Section 10632(a)(3)
(A) Six standard water shortage levels corresponding to progressive ranges of up to 10, 20, 30, 40,
and 50 percent shortages and greater than 50 percent shortage. Urban water suppliers shall define
these shortage levels based on the suppliers’ water supply conditions, including percentage
reductions in water supply, changes in groundwater levels, changes in surface elevation or level of
subsidence, or other changes in hydrological or other local conditions indicative of the water supply
available for use. Shortage levels shall also apply to catastrophic interruption of water supplies,
including, but not limited to, a regional power outage, an earthquake, and other potential
emergency events.
(B) An urban water supplier with an existing water shortage contingency plan that uses different
water shortage levels may comply with the requirement in subparagraph (A) by developing and
including a cross-reference relating its existing categories to the six standard water shortage levels.
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The following subsection present the Water Conservation Stages outlined in the City Code.
8.4.1 – Water Conservation Stage I
A Phase I water supply shortage may be declared when the City Council determines it is
likely that the City of Vernon will suffer a shortage in City water supplies up to 20%, but
shall become mandatory when the City Council determines that the City will suffer a water
shortage in excess of 20% of its normal water supplies.
8.4.2 – Water Conservation Stage II
A Phase II Water Supply Shortage exists when the City Council determines, in its sole
discretion, that due to drought or other water supply conditions, a water supply shortage
or threatened shortage exists and a consumer demand reduction is necessary to make
more efficient use of water and appropriately respond to existing water conditions, except
that a phase II Water Supply Shortage shall become mandatory when the City Council
determines that the City will suffer a water shortage in excess of 30% of its normal water
supplies. Upon the declaration by the city of a Phase II Water Supply Shortage condition,
the city will implement the mandatory Phase II conservation measures.
8.4.3 – Water Conservation Stage III
A Phase III Water Supply Shortage condition is also referred to as an "Emergency"
condition. A Phase III condition exists when the City of Vernon declares a water shortage
emergency or when the City Council determines that the City will suffer a shortage of more
than 50% of its normal water supplies. Upon the declaration of a Phase III Water Supply
Shortage condition, the City shall notify its residents and businesses that a significant
reduction in consumer demand is necessary to maintain sufficient water supplies for public
health and safety and shall implement the mandatory Phase III conservation measures.
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8.5 – Shortage Response Actions
8.5.1 – Supply Augmentation
At a minimum for the next five years, the City will have access to 140% of its Allowable Pumping Allocation
in Central Basin at 10,555 AFY in accordance with the Third Amended Judgment, and sufficient recycled
water to operate the Malburg Generation Station at 800 AFY. Thus, no supply augmentation actions are
proposed to be included in the shortage response actions at this time.
8.5.2 – Demand Reduction
The majority of the City’s shortage response actions are aimed at reducing demand throughout the WSA.
The following are the consumption reductions methods related generally to water conservation and
specifically to the three (3) Water Conservation Stages.
Water Code Section 10632 (a)(4)
Shortage response actions that align with the defined shortage levels and include, at a minimum,
all of the following:
(A) Locally appropriate supply augmentation actions.
(B) Locally appropriate demand reduction actions to adequately respond to shortages.
(C) Locally appropriate operational changes.
(D) Additional, mandatory prohibitions against specific water use practices that are in addition to
state-mandated prohibitions and appropriate to the local conditions.
(E) For each action, an estimate of the extent to which the gap between supplies and demand will
be reduced by implementation of the action.
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8.5.2.1 – General Prohibitions
City of Vernon Municipal Code Section 25.101:
No customer of the City of Vernon shall make, cause, use or permit the use of city water
in a manner contrary to any provision of this article or in an amount which exceeds that
permitted pursuant to action taken by the city council in accordance with the provisions
of this article.
In addition, the following water conservation requirements are effective at all times and
are permanent. Violations of this section will be considered waste and an unreasonable
use of water.
a. Limits on Watering Hours: Watering or irrigating of lawn, landscape or other
vegetated area with potable water is prohibited between the hours of 10:00 a.m.
and 5:00 p.m. on any day, except by use of a hand-held bucket or similar
container, a hand-held hose equipped with a positive self-closing water shut-off
nozzle or device, or for very short periods of time for the express purpose of
adjusting or repairing an irrigation system.
b. Limit on Watering Duration: Watering or irrigating of lawn, landscape or other
vegetated area with potable water using a landscape irrigation system or a
watering device that is not continuously attended is limited to no more than
fifteen (15) minutes watering per day per station. This subsection does not apply
to landscape irrigation systems that exclusively use very low-flow drip type
irrigation systems when no emitter produces more than two (2) gallons of water
per hour and weather based controllers or stream rotor sprinklers that meet a
seventy percent (70%) efficiency standard.
c. No Excessive Water Flow or Runoff: Watering or irrigating of any lawn, landscape
or other vegetated area in a manner that causes or allows excessive water flow
or runoff onto an adjoining sidewalk, driveway, street, alley, gutter or ditch is
prohibited.
d. No Washing Down Hard or Paved Surfaces: Washing down hard or exterior paved
surfaces, including but not limited to sidewalks, walkways, driveways, parking
areas, patios or alleys, is prohibited except when necessary to alleviate safety or
sanitary hazards, and then only by use of a hand-held bucket or similar container,
a hand-held hose equipped with a positive self-closing water shut-off device, a
low-volume, high-pressure cleaning machine equipped to recycle any water used,
or a low-volume high-pressure water broom.
e. Obligation to Fix Leaks, Breaks or Malfunctions: Excessive use, loss or escape of
water through breaks, leaks or other malfunctions in the water user's plumbing
or distribution system for any period of time after such escape of water should
have reasonably been discovered is prohibited and shall be repaired as soon as
reasonably practicable.
f. Re-circulating Water Required for Water Fountains and Decorative Water
Features: Operating a water fountain or other decorative water feature that does
not use re-circulated water is prohibited.
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g. Limits on Washing Vehicles: Using water to wash or clean a vehicle, including but
not limited to any automobile, truck, van, bus, motorcycle, boat or trailer, whether
motorized or not is prohibited, except by use of a hand-held bucket or similar
container or a hand-held hose equipped with a positive self-closing water shut-off
nozzle or device. This subsection does not apply to any commercial vehicle
washing facility.
h. Drinking Water Served Upon Request Only: Eating or drinking establishments,
including but not limited to a restaurant, hotel, cafe, cafeteria, bar, or other public
place where food or drinks are sold, served, or offered for sale, are prohibited from
providing drinking water to any person unless expressly requested.
i. No Installation of Single Pass Cooling Systems: Installation of single pass cooling
systems is prohibited in buildings requesting new water service.
j. Limits on Commercial Car Wash and Laundry Systems: Installation of non-re-
circulating water systems is prohibited in new commercial conveyor car wash and
new commercial laundry systems.
8.5.2.2 – Water Conservation Stage I
City of Vernon Municipal Code Section 25.103:
In addition to the prohibited uses of water identified in Section 25.101, the following water
conservation requirements apply during a declared Phase I Water Supply Shortage:
a. Limits on Watering Days: Watering or irrigating of lawn, landscape or other
vegetated area with potable water is limited to three (3) days per week on a
schedule established and posted by the City. Watering or irrigating of lawn,
landscape or other vegetated area with potable water is prohibited between the
hours of 6:00 a.m. and 6:00 p.m. Pacific Standard Time. This provision does not
apply to landscape irrigation zones that exclusively use very low flow drip type
irrigation systems when no emitter produces more than two (2) gallons of water
per hour. This provision also does not apply to watering or irrigating by use of a
hand-held bucket or similar container, a hand-held hose equipped with a positive
self-closing water shut-off nozzle or device, or for very short periods of time for
the express purpose of adjusting or repairing an irrigation system.
b. Obligation to Fix Leaks, Breaks or Malfunctions: All leaks, breaks, or other
malfunctions in the water user's plumbing or distribution system must be repaired
within seventy-two (72) hours of notification by the city unless other
arrangements are made with the city.
8.5.2.3 – Water Conservation Stage II
City of Vernon Municipal Code Section 25.104:
In addition to the prohibited uses of water identified in Sections 25.101 and 25.103, the
following additional water conservation requirements apply during a declared Level II
Water Supply Shortage:
a. Watering Days: Watering or irrigating of lawn, landscape or other vegetated area
with potable water is limited to two (2) days per week on a schedule established
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and posted by the city. During the months of November through March, watering
or irrigating of lawn, landscape or other vegetated area with potable water is
limited to no more than one (1) day per week on a schedule established and posted
by the city. This provision does not apply to landscape irrigation zones that
exclusively use very low flow drip type irrigation systems when no emitter
produces more than two (2) gallons of water per hour. This provision also does
not apply to watering or irrigating by use of a hand-held bucket or similar
container, a hand-held hose equipped with a positive self-closing water shut-off
nozzle or device, or for very short periods of time for the express purpose of
adjusting or repairing an irrigation system.
b. Obligation to Fix Leaks, Breaks or Malfunctions: All leaks, breaks, or other
malfunctions in the water user's plumbing or distribution system must be repaired
within forty-eight (48) hours of notification by the city unless other arrangements
are made with the city.
c. Limits on Filling Ornamental Lakes or Ponds: Filling or re-filling ornamental lakes
or ponds is prohibited, except to the extent needed to sustain aquatic life,
provided that such animals are of significant value and have been actively
managed within the water feature prior to declaration of a supply shortage level
under this article.
d. Limits on Washing Vehicles: Using water to wash or clean a vehicle, including but
not limited to, any automobile, truck, van, bus, motorcycle, boat or trailer,
whether motorized or not, is prohibited except by use of a hand-held bucket or
similar container, a hand-held hose equipped with a positive self-closing water
shut-off nozzle or device, by high pressure/low volume wash systems, or at a
commercial car washing facility that utilizes a re-circulating water system to
capture or reuse water.
e. Limits on Filling Residential Swimming Pools & Spas: Re-filling of more than one
(1) foot and initial filling of residential swimming pools or outdoor spas with
potable water is prohibited.
f. Commercial Nurseries Watering Limitations: Commercial Nurseries shall be
prohibited from watering lawn, landscaped or other turf areas more often than
every other day and shall be prohibited from watering between the hours of 10:00
a.m. and 4:00 p.m.
g. Mandatory Water Restrictions: No customer shall make, cause, use or permit the
use of city water for any purpose in excess of eighty-five percent (85%) of the
amount used the same corresponding monthly billing period two (2) years
preceding the city council declaring a Phase I Water Supply Shortage. In the case
of a newly established business, no restriction shall be required until such time
that the business has been established for one (1) year, at which time the
preceding year's corresponding monthly billing shall be used to determine the
businesses monthly water consumption.
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8.5.2.4 – Water Conservation Stage III
City of Vernon Municipal Code Section 25.105:
In addition to the prohibited uses of water identified in Sections 25.101, 25.103 and
25.104, the following water conservation requirements apply during a declared Phase III
Water Supply Shortage Emergency:
a. No Watering or Irrigating: Watering or irrigating of lawn, landscape or other
vegetated area with potable water is prohibited. This restriction does not apply to
the following categories of use, unless the city has determined that recycled water
is available and may be applied to the use:
1. Maintenance of vegetation, including trees and shrubs, that are watered
using a hand-held bucket or similar container, hand-held hose equipped
with a positive self-closing water shut-off nozzle or device;
2. Maintenance of existing landscape necessary for fire protection;
3. Maintenance of existing landscape for soil erosion control;
4. Maintenance of plant materials identified to be rare or essential to the
well-being of protected species;
5. Maintenance of landscape within active public playing fields and school
grounds, provided that such irrigation does not exceed two (2) days per
week according to the schedule established in Section 25.104(a) and the
time restrictions as established in section 25.103(a);
6. Actively irrigated environmental mitigation projects.
b. Obligation to Fix Leaks, Breaks or Malfunctions: All leaks, breaks, or other
malfunctions in the water user's plumbing or distribution system must be repaired
within twenty four (24) hours of notification by the city unless other arrangements
are made with the city.
c. Commercial Nurseries Watering Limitations: Commercial Nurseries shall be
prohibited from watering lawn, landscaped or other turf areas more often than
every third (3rd) day and shall be prohibited from watering between the hours of
6:00 a.m. and 6:00 p.m.
d. Mandatory Water Restrictions: No customer shall make, cause, use or permit the
use of city water for any purpose in excess of seventy-five percent (75%) of the
amount used the same corresponding monthly billing period two (2) years
preceding the city council declaring a Phase I Water Supply Shortage. In the case
of a newly established business, no restriction shall be required until such time
that the business has been established for one (1) year, at which time the
preceding year's corresponding monthly billing period shall be used to determine
the businesses monthly water consumption.
e. Fire Hydrant Use: The use of water from a fire hydrant shall be limited to fire
fighting and related activities. Other uses of city water for municipal purposes
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shall be limited to activities necessary to maintain the public health, safety and
welfare.
f. Customer Water Conservation Report: The city may, by written request, require
all commercial and industrial customers using 100 acre feet or more per year of
potable water to submit a water conservation plan and quarterly progress reports
on such plan. The conservation plan shall include recommendations for increased
water savings, including increased water recycling based on feasibility. The
quarterly report shall include progress to date on implementation of such
recommendations.
8.5.3 – Operational Changes
Operational changes are related to demand reduction as discussed in Section 8.5.2.
8.5.4 – Additional Mandatory Restrictions
Mandatory restrictions are related to demand reduction as discussed in Section 8.5.2.
8.5.5 – Emergency Response Plan
The City will implement Water Conservation Stage I, II or III as appropriate for the loss of supply associated
with a catastrophic supply interruption.
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8.5.6 – Seismic Risk Assessment and Mitigation Plan
The City’s Natural Hazard Mitigation Plan (NHMP) (Appendix U) addresses seismic risk and associated
mitigation actions. Per the NHMP:
City of Vernon, like most of the Los Angeles Basin, lie over the area of one or more known
earthquake faults, and potentially many more unknown faults, particularly so-called
lateral or blind thrust faults.
The major faults that have the potential to affect the greater Los Angeles Basin, and
therefore the City of Vernon are the:
San Andreas
Newport Inglewood
Palos Verdes and
Whittier Narrows
Water Code Section 10632.5.(a)
In addition to the requirements of paragraph (3) of subdivision (a) of Section 10632, beginning
January 1, 2020, the plan shall include a seismic risk assessment and mitigation plan to assess the
vulnerability of each of the various facilities of a water system and mitigate those vulnerabilities.
(b) An urban water supplier shall update the seismic risk assessment and mitigation plan when
updating its urban water management plan as required by Section 10621.
(c) An urban water supplier may comply with this section by submitting, pursuant to Section 10644,
a copy of the most recent adopted local hazard mitigation plan or multihazard mitigation plan
under the federal Disaster Mitigation Act of 2000 (Public Law 106-390) if the local hazard mitigation
plan or multihazard mitigation plan addresses seismic risk.
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Per Section 5 of the NHMP:
The effects of earthquakes span a large area, and large earthquakes occurring in many
parts of the Southern California region would probably be felt throughout the region.
However, the degree to which the earthquakes are felt, and the damages associated with
them may vary. At risk from earthquake damage are large stocks of old buildings and
bridges: many high tech and hazardous materials facilities: extensive sewer, water, and
natural gas pipelines; earth dams; petroleum pipelines; and other critical facilities and
private property located in the county. The relative or secondary earthquake hazards,
which are liquefaction, ground shaking, amplification, and earthquake-induced landslides,
can be just as devastating as the earthquake…
Damage to Lifelines
Lifelines are the connections between communities and outside services. They include
water and gas lines, transportation systems, electricity, and communication networks.
Ground shaking and amplification can cause pipes to break open, power lines to fall, roads
and railways to crack or move, and radio and telephone communication to cease.
Disruption to transportation makes it especially difficult to bring in supplies or services.
Lifelines need to be usable after an (sic) earthquake to allow for rescue, recovery, and
rebuilding efforts and to relay important information to the public.
Ongoing mitigation actions identified in the NHMP related to earthquakes include encouraging seismic
strength evaluations of critical facilities in the City to identify vulnerabilities for mitigation of public
infrastructure and critical facilities to meet current seismic standards, and retrofitting critical facilities to
minimize earthquake damage.
8.5.7 – Shortage Response Action Effectiveness
During Stage I, irrigation limitations and mandatory repairs to leaks will have a noticeable impact on water
demand reduction.
During Stage II, the City will reach out to its water use intensive customers to identify any opportunities
to reduce water loss or excessive use. This is a relatively small number of customers and the impact is
expected to be significant and immediate once communication is opened up.
During Stage III, the City will reach out to (1) all of its customers to identify any opportunities to reduce
water loss or excessive use, and (2) its water use intensive customers to submit monthly reports on water
conservation plan implementation. The impact of these additional steps is expected to be significant and
immediate once communication is opened up.
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8.6 – Communication Protocols
Under Water Conservation Stage III, the City may require high commercial and industrial water users to
submit a water conservation plan and subsequent quarterly progress reports.
On August 5, 2014, the City issued a Notice of Phase 1 Water Supply Shortage (see Appendix N). In addition
to prohibitions and limitation on irrigation, the Notice included the following consumption reduction
methods:
Obligation to fix leaks, breaks or malfunctions: All leaks, breaks, or other malfunctions in
the water user’s plumbing or distribution system must be repaired within 72 hours of
notification by the City unless other arrangements are made with the City.
On June 4, 2015, the City issued a Notice of Phase 2 Water Supply Shortage (see Appendix O). In addition
to prohibitions and limitation on irrigation, the Notice included the following consumption reduction
methods:
Obligation to fix leaks, breaks or malfunctions: All leaks, breaks, or other malfunctions in
the water user’s plumbing or distribution system must be repaired within 48 hours of
notification by the City unless other arrangements are made with the City.
Water Code Section 10632 (a)(5)
Communication protocols and procedures to inform customers, the public, interested parties, and
local, regional, and state governments, regarding, at a minimum, all of the following:
(A) Any current or predicted shortages as determined by the annual water supply and demand
assessment described pursuant to Section 10632.1.
(B) Any shortage response actions triggered or anticipated to be triggered by the annual water
supply and demand assessment described pursuant to Section 10632.1.
(C) Any other relevant communications
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8.7 – Compliance and Enforcement
For each violation by any customer of the water use curtailment provision of Sec.
25.104(g), a surcharge shall be imposed in an amount equal to fifty percent (50%) of the
portions of the water bill that exceeds the respective percentages set in said section. For
each violation by any customer of the water use curtailment provision of Sec. 25.105(d), a
surcharge shall be imposed in an amount equal to one hundred percent (100%) of the
portions of the water bill that exceeds the respective percentages set in said section.
8.8 – Legal Authorities
Per Ordinance No. 1161:
WHEREAS, the City of Vernon is a municipal corporation and a chartered city of the State
of California organized and existing under its Charter and the Constitution of the State of
California; and
WHEREAS, due to drought and other environmental conditions the establishment of water
conservation measures to assure reasonable and beneficial uses of water, to prevent
waste of water and maximize the efficient use of water is appropriate; and
Water Code Section 10632 (a)(6)
For an urban retail water supplier, customer compliance, enforcement, appeal, and exemption
procedures for triggered shortage response actions as determined pursuant to Section 10632.2.
Water Code Section 10632 (a)(7)
(A) A description of the legal authorities that empower the urban water supplier to implement and
enforce its shortage response actions specified in paragraph (4) that may include, but are not
limited to, statutory authorities, ordinances, resolutions, and contract provisions.
(B) A statement that an urban water supplier shall declare a water shortage emergency in
accordance with Chapter 3 (commencing with Section 350) of Division 1. [see below]
(C) A statement that an urban water supplier shall coordinate with any city or county within which
it provides water supply services for the possible proclamation of a local emergency, as defined in
Section 8558 of the Government Code.
Water Code Section Division 1, Section 350
Declaration of water shortage emergency condition. The governing body of a distributor of a public
water supply, whether publicly or privately owned and including a mutual water company, shall
declare a water shortage emergency condition to prevail within the area served by such distributor
whenever it finds and determines that the ordinary demands and requirements of water consumers
cannot be satisfied without depleting the water supply of the distributor to the extent that there
would be insufficient water for human consumption, sanitation, and fire protection.
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WHEREAS, by adoption of Ordinance No. 995 and Ordinance No. 1115, the City Council of
the City enacted water conservation restrictions, which are codified in Article VI of Chapter
25 of the Vernon City Code; and
WHEREAS, the Metropolitan Water District Board of Directors adopted a policy requiring
cities to have a water conservation ordinance, as a prerequisite of funding through the
Public Sector Program and the Enhanced Conservation Program; and
WHEREAS, the MWD policy also applies to any future state or federal funding
opportunities; and
WHEREAS, in order to qualify under the new MWD policy, a water conservation ordinance
must include the prohibition of certain outdoor water uses by residences and busines,
including: regulating outdoor irrigation practice, penalties for violation and a public
communications mechanism to allow customers to report any perceived water wasting
violations; and
WHEREAS, the Department of Water Resources, based on legislative directives, is
requiring cities to adopt a model water efficiency landscape ordinance, or its equivalent,
which allows a city to adopt and ordinance developed by another agency that has received
certification compliance for DWR; and
WHEREAS, if the city opts not to take any action in terms of developing a water
conservation ordinance, the DWR model ordinance shall be adopted by statute; and
WHEREAS, Section 4.5 of the Charter of the City of Vernon provides that regulations
pertaining to any subject, model codes, and codifications of ordinances of other public
agencies may be adopted by reference, in their original form or with amendments, with
the same effect as an ordinance; and
WHEREAS, the Director of Community Services and Water has reviewed the Vernon City
Code and has recommended that the City adopt by reference the Model Water Efficiency
Landscape Ordinance of the Department of Water Resources; and
WHEREAS, the City Council gave a first reading on this ordinance and the title of said code
and standards, and gave a second reading for consideration of adoption of the Model
Water Efficiency Landscape Ordinance of the Department of Water Resources in its
entirety; and
WHEREAS, the Director of Community Services and Water has recommended that the City
Council make a finding that the adoption of this ordinance is exempt pursuant to Guideline
15061(b)(3) and Guideline 15308 of CEQA because the adoption of this ordinance will not
have a significant effect on the environment as it has the effect of limiting rather than
authorizing the use of water supplies and resources, and also constitutes and action by
the City to ensure the maintenance, enhancement, and protection of the environment
through the conservation of water resources, and
WHEREAS, the City Council finds and determines that it is in the interest of the public
health, safety and welfare of the City of Vernon, its residents, businesses and employees
to implement the recommendation of the Director of Community Services and Water, as
set forth in this Ordinance.
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8.9 – Financial Consequences of WSCP
As an industrial City, few of the actions related to discretionary water use reduction will impact revenue
or expenditures, given the small associated demands. However, Mandatory Water Restrictions of 85% of
historical use under Water Conservation Stage II and 75% of historical use under Water Conservation
Stage III may pose a short-term drop in revenue. It should be noted that revenue associated with
commodity rates for water service are not a significant portion of the City’s operating budget; therefore,
even the impact of a Mandatory Water Restriction will be minimal. Furthermore, the City may change its
rate structure as necessary to account for a revenue shortfall.
8.10 – Monitoring and Reporting
The City regularly monitors and reports its water production and consumption to Watermaster (WRD).
This database would be used to collect, track, and analyze data to monitor customer compliance and to
meet state reporting requirements.
Water Code Section 10632(a)(8)
A description of the financial consequences of, and responses for, drought conditions, including, but
not limited to, all of the following:
(A) A description of potential revenue reductions and expense increases associated with activated
shortage response actions described in paragraph (4).
(B) A description of mitigation actions needed to address revenue reductions and expense increases
associated with activated shortage response actions described in paragraph (4).
(C) A description of the cost of compliance with Chapter 3.3 (commencing with Section 365) of
Division 1.
Water Code Section 10632(a)(9)
For an urban retail water supplier, monitoring and reporting requirements and procedures that
ensure appropriate data is collected, tracked, and analyzed for purposes of monitoring customer
compliance and to meet state reporting requirements.
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8.11 – WSCP Refinement Procedures
The City reevaluates its WSCP every five years to coincide with the update to the UWMP.
8.12 – Special Water Feature Distinction
As a general prohibition:
Re-circulating Water Required for Water Fountains and Decorative Water Features:
Operating a water fountain or other decorative water feature that does not use re-
circulated water is prohibited.
Upon declaration of a Water Conservation Stage II or III:
Limits on Filling Ornamental Lakes or Ponds: Filling or re-filling ornamental lakes or ponds
is prohibited, except to the extent needed to sustain aquatic life, provided that such
animals are of significant value and have been actively managed within the water feature
prior to declaration of a supply shortage level under this article.
The City is unaware of any water features within the Water Service Area. Therefore, implementation of
the above restriction will have a negligible impact.
8.13 – Plan Adoption, Submittal, and Availability
The 2020 UWMP, including the WSCP, will be made available to customers, the City, and Los Angeles
County no later than 30 days after plan adoption.
Water Code Section 10632 (a)(10)
Reevaluation and improvement procedures for systematically monitoring and evaluating the
functionality of the water shortage contingency plan in order to ensure shortage risk tolerance is
adequate and appropriate water shortage mitigation strategies are implemented as needed.
Water Code Section 10632 (b)
For purposes of developing the water shortage contingency plan pursuant to subdivision (a), an
urban water supplier shall analyze and define water features that are artificially supplied with
water, including ponds, lakes, waterfalls, and fountains, separately from swimming pools and spas,
as defined in subdivision (a) of Section 115921 of the Health and Safety Code.
Water Code Section 10632 (a)(c)
The urban water supplier shall make available the water shortage contingency plan prepared
pursuant to this article to its customers and any city or county within which it provides water
supplies no later than 30 days after adoption of the water shortage contingency plan.
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Chapter 9 – Demand Management Measures
9.1 – General Description
Demand Management Measures (DMMs) are established methods and practices for water use reduction.
DWR requires implementation of all DMMs through a coordinated effort at the wholesale and retail levels.
However, DWR acknowledges that there may be local influences on the viability of individual DMMs and
makes allowances for non-implementation.
9.2 – Demand Management Measures for Wholesale Suppliers
The City works closely with CBMWD and its member agencies to effectively implement demand
management measures by encouraging its customers to participate in and take advantage of wholesaler
programs. Per the CBMWD 2020 Draft UWMP:
CBMWD CONSERVATION PROGRAMS
CBMWD recognizes the importance of water conservation and water use efficiency as an
integral part of water use planning. CBMWD is a signatory to the CalWEP MOU. As a
member of CalWEP, CBMWD commits itself to use good-faith efforts to implement all
applicable BMPs and submits annual reports to the CalWEP that document the
implementation of each BMP. CBMWD actively implements all recommended measures
with good-faith effort by maintaining staff support, funding, and in general, the priority
levels necessary to achieve the level of activity called for in each BMP's definition as
described in the MOU.
Water Code Section 10631
(e) Provide a description of the (wholesale) supplier’s water demand management measures. This
description shall include all of the following:
(1)(B) The narrative pursuant to this paragraph shall include descriptions of the following water
demand management measures:
(ii) Metering.
(iv) Public education and outreach.
(vi) Water conservation program coordination and staffing support.
(vii) Other demand management measures that have a significant impact on water use as
measured in gallons per capita per day, including innovative measures, if implemented.
(2) For an urban wholesale water supplier, as defined in Section 10608.12, (provide) a narrative
description of the items in clauses (ii), (iv), (vi), and (vii) of subparagraph (B) of paragraph (1), and
a narrative description of its distribution system asset management and wholesale supplier
assistance programs.
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CBMWD plays an active role in promoting water use efficiency in its service area. To this
end, in 2006, conservation efforts were heightened with the adoption of CBMWD’s 5-year
Water Conservation Master Plan. The plan evaluated current and future water savings
potential and outlined a cost-effective conservation strategy in CBMWD’s service area. It
has since been updated in 2015 as Board Resolution No. 3-15-860, which is referred to as
the Conservation Monitoring Program. Moreover, as the wholesale supplier to the region,
CBMWD assists its retail agencies by administering various MWD rebate programs for its
retail agencies and providing assistance to the retail agencies in other water use efficiency,
education, and public information programs.
BMP 1: UTILITY OPERATIONS
This BMP deals with water waste prohibitions, water efficiency ordinances, metering,
conservation pricing, and other items related to managing water use.
WATER WASTE PROHIBITION ORDINANCE AND AMENDMENT
Beginning 2006, CBMWD Board of Directors adopted a 5-year Water Conservation Master
Plan, and revised in 2015 (Board Resolution No. 3-15-860), to prevent water waste in its
service area. Updates to the District’s plan considers elements that adhere to reduced
supply conditions in addition to the following areas: fairness based on consumptive use
needs, considers actions demonstrated by retail agencies of reducing water demands,
applies to all agencies with a connection to MWD’s imported water supply, and
incorporates recent adjustments adopted under MWD’s plan. The retail agencies that
CBMWD wholesales water to have established conservation measures for their customers
and those measures can be found in their UWMPs.
DROUGHT RESPONSE PLAN
In June 2015, CBMWD developed a Drought Response Plan along with a Drought Response
Tool in order to assist retail agencies with responding to the SWRCB regulations and
conservation mandates. The Drought Response Tool assists retail agencies with evaluating
baseline water use by sector, identifying customer sectors and major end uses to target
for water savings, evaluating drought response actions and associated water savings
potential and tracking progress against water conservation standards mandated by the
SWRCB. With the mandated water use reductions implemented by the State Water
Resources Control Board, CBMWD sought to provide additional resources to its retail
water agencies to assist them in meeting their specific targets. These efforts included
providing drought training for its retail water agencies, where CBMWD staff educated
retail water agency staff on conservation rebates available and how to respond to
constituent inquiries regarding the drought. CBMWD also developed a drought training
manual that was provided to each participant as a resource to have the most up to date
information on current conditions. CBMWD prepared a comprehensive Drought Response
Plan and Tool for agencies to identify water use and evaluate drought response programs.
METERING
Metering is not applicable to wholesalers; however, all water deliveries by CBMWD are
metered and utilize standard commodity rate components based on rates and charges
schedules developed by CBMWD. All water deliveries by retail agencies are metered to the
end user.
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CONSERVATION PRICING
Although the conservation pricing BMP refers to the rate structure of a retail water agency
to encourage a reduction of water use, CBMWD, as a wholesale agency, employs a water
budget structure for its retail agencies based on a two tier rate structure. Retail agencies
that exclusively provide groundwater to their customers, tend to have water rates that are
lower than those that serve a mix of groundwater and imported water. Imported water
purchased from CBMWD and provided by MWD carries not only the cost of acquiring
importing, purifying (treating), and distributing the commodity throughout the region but
also a long-term action plan for ensuring adequate supplies to meet growing demands
through conservation, education, and new locally produced supplies.
CBMWD’s Capacity Charge is intended to encourage customers to reduce peak day
demands during the summer months, which will result in more efficient use of MWD’s
existing infrastructure. CBMWD has passed through this MWD charge to its customer
agencies by applying MWD’s methodology. Each customer’s Capacity Charge is
determined from their highest daily average usage (per cfs) for the past three completed
summer periods of May 1 through September 30; however, because MWD assesses
CBMWD on the coincident daily peak of all the connections and aggregate of all its
customers’ daily peak as the non-coincident peak, CBMWD is able to keep the Capacity
Charge rate lower than the MWD rate for its customers.
BMP 2: PUBLIC EDUCATION & OUTREACH
This BMP deals with outreach efforts including emails, newsletters, advertisements,
presentations, promotions, etc., related to outreach and education.
SCHOOL PROGRAMS
Think Earth! It’s Magic (Grades K-5)
A collaborative program between CBMWD and the Think Earth Environmental Education
Foundation to stage free, environmental magic shows for elementary schools. Each year,
this traveling magic show visits schools throughout the region to teach students about the
importance of applying environmentally friendly practices around their homes and
schools. This program is the only program in the state to combine an award-winning,
grade appropriate classroom curriculum with an environmental magic show assembly.
Think Water! It's Magic (Afterschool Program for Grades K-5)
An adaptation of CBMWD’s popular Think Earth! It's Magic program, Think Water! Its
Magic brings the educational environmental magic shows to extended day care and after
school programs throughout the service area. The magic shows cover such topics as the
water cycle, water quality, water recycling, and the importance of conservation.
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Think Watershed (Grades 4-6)
Think Watershed is a partnership of environmental stakeholders in southern California
interested in creating and implementing a watershed education program for grades 4 to
6 using the Los Angeles County Office of Education’s Floating Lab. Components of the
program include a classroom watershed curriculum focused on the San Gabriel River
Watershed and then a field trip on board the Floating Lab, a modern marine science
research vessel docked in Rainbow Harbor, Long Beach.
Water Squad Investigations (Grades 4-12)
Successfully launched in fall 2006, Water Squad Investigations is a collaborative water
program between CBMWD, Los Angeles County Sanitation District (LACSD) and the Los
Angeles County Department of Parks and Recreation. Through the program, students go
on a one-day field trip to the San Jose Creek WRP and the Whittier Narrows Nature Center.
By day's end, students will have gained a greater understanding of how water recycling
can help conserve drinking water and simple ways to conserve water around their homes.
Water Wanderings (Grades 4-5)
A classroom visitation program between CBMWD and the S.E.A. Lab in Redondo Beach.
This hands-on program takes fourth and fifth-graders on a 2 1/2 –hour journey through
California’s water system. Students participate in activities that include “Touring Tide
Pool,” a van outfitted with touch-tanks, enabling students to touch live marine creatures
and plants. Water Wanderings meets many of the fourth grade and fifth grade state
standards for social science and science. By participating in this free program, students
learn to appreciate California’s water as a scarce, valuable resource.
Water Is Life Poster Contest (Grades 4-8)
As part of CBMWD's annual recognition of Water Awareness Month each May, the "Water
Is Life" Poster Contest is a collaborative arts program between CBMWD and MWD.
Through the contest, students are encouraged to create posters that creatively depict
various water uses and/or water use. CBMWD then selects a grand-prize winner who is
awarded a fully-loaded laptop computer or tablet device. The winning poster is also
submitted to MWD to be included in the annual calendar and featured on water bottles
and other promotional items.
Conservation Connection: Water and Energy in Southern California (Grades 6-8)
This action-based curriculum provides students with the opportunity to look critically at
important environmental issues and take responsibility for finding solutions. After learning
about the vital role that water and energy play in our lives, students will have the
opportunity to survey their family's water and energy use and survey water and energy
use in their school. From there, they will develop, implement, and monitor plans to
decrease water and energy use.
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Waterlogged (Grades 9-12)
A high school visitation program between CBMWD and the Roundhouse Marine Studies
Lab and Aquarium, an oceanographic teaching station. The program offers local high
schools five exciting curriculum programs, each aligned to the California State Science
Content Standards. Through specimen dissections, examples of current aquatic/marine
science research, and practical hands-on activities, students learn about the scientific
method, the ecology of the Pacific Ocean, and the unintended impact of human life on the
aquatic/marine environment.
Solar Cup (Grades 9-12)
A partnership between CBMWD and MWD, Solar Cup is a hands-on education program in
which high school teams throughout southern California learn about water conservation
and renewable energy by building and racing solar powered boats. Four CBMWD teams,
along with other teams throughout southern California, compete against each other in
both sprint and endurance races at Lake Skinner, in Temecula. As part of the seven-month
long program, teams also research and complete various technical reports and create a
water-related public service announcement. The culminating Solar Cup races take place
each year in May.
Conservation Connection Water & Energy in Southern California (Grades 5-8)
Where do we get the water and energy that we use? Will we always have enough to meet
our needs? Conservation Connection answers these questions, showing the connections
between California, water and energy supply, and people. But providing information is
only part of Conservation Connection. The goal of the curriculum is to get students actively
involved – in their homes and at school – in conserving water and energy. Within the
program, students have the opportunity to survey their family’s water and energy use and
survey water and energy use at their school. After gathering data, analyzing their findings,
and reviewing recommendations, students make, implement, and monitor plans to
decrease water and energy use. By participating in this action-based curriculum, students
will learn to look critically at important environmental issues and take responsibility for
finding solutions.
Sewer Science (Grades 9-12)
Sewer Science is an award-winning, hands-on laboratory program that will teach high
school students in CBMWD's service area about wastewater treatment. During a
weeklong lab course, students will create fake wastewater and employ physical, biological
and chemical treatment methods and procedures to test its quality. The lab will be
facilitated by biologists and chemists from LACSD, allowing students the opportunity to
learn firsthand from experienced science professionals. The program meets California
State Content Standards in the high school sciences for chemistry, physics, and
microbiology.
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GENERAL PUBLIC OUTREACH (CONSERVATION COORDINATOR)
As the regional wholesaler, CBMWD employs one full-time Management Analyst who
works throughout CBMWD’s service area to promote water conservation. The
Management Analyst also works with cities and water agencies to foster consumer
behavioral change and implement various conservation programs that result in significant
reduction in overall retail water use. The current Management Analyst is Jeremy
Melendez, who can be reached at 323-201-5510 or jeremym@centralbasin.org. Sources
of funding for CBMWD’s water conservation program in the last five years include:
Department of Energy grant, DWR grant, MWD Member Agency Conservation Program
Allocation, water retail agency partnerships, and through its own fiscal budget.
GENERAL PUBLIC INFORMATION (BROCHURES, MAILINGS, WEBSITE, ETC.)
CBMWD’s public information efforts consist of a variety of programs and practices that
are used to educate the public about water conservation. Conservation literature is
provided to the public at various one-day programs and at community events. CBMWD
also provides the community with a Speakers Bureau through which CBMWD’s Board of
Directors and staff work with local civic organizations and service clubs to provide
information on a variety of programs and projects that promote conservation.
Additionally, CBMWD provides education through our website, an interactive Blog, and
various publication materials.
CBMWD has continued to engage its community through outreach and public education
programs by integrating social marketing strategies with existing programs. CBMWD uses
a variety of social media platforms to disseminate information through websites such as
Twitter, Facebook, Instagram, Pinterest, LinkedIn and YouTube. CBMWD has realized
many campaign successes of increased community involvement, which is reflective in the
upward curve of its website traffic.
By using technology, CBMWD is connected with residents and businesses in a new and
exciting way to promote the benefits and importance of water conservation. CBMWD’s
social media strategy is tailored to meet the needs of the local community. Additional
Public Information and Outreach programs include:
MWD Inspection Trips
As an MWD Member Agency, CBMWD has two representatives on the MWD Board of
Directors. Inspection trips are a key part of MWD’s efforts to educate community leaders
on water issues and the statewide water delivery system. The tours offered include: State
Water Project Inspection Trip, Colorado River Aqueduct Inspection Trip and Diamond
Valley Lake Inspection Trip. These tours are available throughout the year.
Water Education Tours (W.E.T.)
CBMWD offers one-day tours of the water delivery system to members of their
community. Through participation in the tours, community members are educated on the
key water issues facing our region and are able to visit recycled water pump stations,
waste water treatment facilities, drought demonstration gardens, and a recycled water
customer.
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Max the Water Dog
In an effort to engage the whole family on water issues, CBMWD has introduced Max the
Water Dog mascot as the latest edition to CBMWD’s outreach programs. Max is a water
conservation super hero that was introduced to provide a fun approach on learning about
water. Max the Water Dog appears at community events and interacts with the public.
Community Outreach Booths
Another aspect of CBMWD’s community engagement efforts is Community Outreach
Booths. Throughout the year, CBMWD hosts community outreach booths at a variety of
community events. District representatives are on-hand to talk with members of the
community about vital water issues and provide information on resources available.
BMP 3: RESIDENTIAL PROGRAMS
This BMP deals with showerheads, faucets, toilets, and leak detection surveys related to
residential water use. This BMP is not applicable to wholesalers. CBMWD, as a wholesaler,
does not provide direct service to the public, but does provide wholesale deliveries to local
retail agencies.
As the region’s wholesale supplier, CBMWD administers MWD’s landscape programs for
its retail agencies. These programs aim to help residential and commercial customers to
be water efficient. Current landscape programs include rebates for Weather-Based
Irrigation Controllers, Rotating Sprinkler Nozzles, Rain Barrels & Cisterns, Soil Moisture
Sensor Systems, and Turf Removal, as described below:
RESIDENTIAL PROGRAMS
Water Survey Assistance - CBMWD provides available support to local agencies in
coordinating commercial water audits. The District helps coordinate surveys conducted by
MWD of large homeowners associations (HOAs), nurseries, and public gardens within its
service area.
Rain Barrels & Cisterns Program – Residential and commercial customers can receive
rebates for installing rain barrels and/or cisterns to collect rainwater for re-use for
watering their landscapes. Customers may receive rebates starting at $35 per barrel or
$250 per cistern. The barrels and cisterns must adhere to specified design guidelines.
Weather-Based Irrigation Controllers Program - This program, previously called the
“Smart Timer Rebate Program,” started in FY 2004-2005. Under this regional program,
residential and small commercial properties are eligible for a rebate when they purchase
and install a weather-based irrigation controller, which has the potential to save 13,500
gallons a year per residence. Rebates start at $80 per controller for landscapes less than
1 acre in area and $35 per station for more than 1 acre.
Rotating Nozzle Rebate Program - This rebate program started in 2007 and is offered to
both residential and commercial customers. Through this program, site owners will
purchase and install rotary nozzles, which can use up to 20 percent less water than
conventional fan spray nozzles, in existing irrigation systems. Rebates for this program
start at $2 per nozzle.
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Soil Moisture Sensor System Program - For large residential sites, a soil moisture sensor,
which measures soil moisture content in the active root zone, can be installed to receive
rebates starting at $80 or $35 per irrigation controller station. The sensor must be
connected to a compatible irrigation system controller.
Turf Removal Program - Through this program, residential and small commercial
customers of participating retail water agencies are eligible to receive a minimum of $2
per square foot (up to 5,000 square feet) of turf removed for qualifying projects.
RESIDENTIAL PLUMBING RETROFIT
This particular item is not applicable to wholesalers; however, CBMWD participates in the
distribution of showerheads, aerators, and toilet tank leak detection tablets at all times.
CBMWD and its retail agencies implemented an agreement with MWD for participation
in a residential ultralow- flush toilet (ULFT) retrofit and a CII retrofit incentive program
that lasted through May 2010. The ULFT rebate program was replaced with a high
efficiency toilet (HET) rebate program, which has been recently replaced, as of November
2015, with a premium high-efficiency toilet (PHET) rebate program. Premium high-
efficiency toilets use 1.1 gallons per flush or less and use almost 20 percent less water than
the WaterSense standard. As of April 2021, CBMWD is rebating $40 per toilet for premium
high-efficiency toilets through MWD funds.
HIGH-EFFICIENCY WASHING MACHINE REBATES
This BMP is not applicable to wholesalers; however, CBMWD implemented an agreement
with MWD for participation in a high efficiency clothes washer incentive program.
Through CBMWD, MWD refunds $85 per high efficiency clothes washer (HECW).
Participants must be willing to allow an inspection of the installed machine for verification
of program compliance. Machines must have a water factor of 4.0 or less and must meet
or exceed the CEE Tier 1 standard. Depending on use, these machines can save about 14
gallons of water a day. Participants are encouraged to contact their local gas and/or
electric utility since additional rebates may be available.
BMP 4: COMMERCIAL, INDUSTRIAL, & INSTITUTIONAL PROGRAMS
This BMP deals with toilets, urinals, steamers, cooling towers, food/restaurant equipment,
medical equipment, and items related to commercial, institutional, and industrial water
use. CBMWD participates in MWD’s “SoCal Water$mart” rebate program. Through
MWD’s SoCal Water$mart, commercial, industrial, and institutional customers are eligible
for rebates to help encourage water efficiency and conservation. The SoCal Water$mart
program offers cash rebates on a wide variety of water-saving technologies.
SoCal Water$mart CII Program – MWD launched this program on July 1, 2008 and offers
rebates to assist CII customers in replacing high-flow plumbing fixtures with low-flow
fixtures. Rebates are available only on those devices listed in Table 4.1 and must replace
higher water use devices. Installation of devices is the responsibility of each participant.
Participants may purchase and install as many of the water saving devices as are
applicable to their site.
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CII customers represent a small portion of customers within the CBMWD service area. The
majority of rebates given out under this program have been for PHETs, HETs, ULFTs, and
landscape devices.
BMP 5: LANDSCAPE PROGRAMS
This BMP deals with establishing parameters for large landscapes, including
measurements, budgets, audits, prohibitions, incentives, etc. related to large landscapes.
This BMP is not applicable to wholesalers; however, CBMWD administers MWD’s
landscape programs for its retail agencies. These landscape programs target both
residential and commercial customers.
Smart Gardening Workshops
CBMWD continues a partnership with the Los Angeles County Department of Public Works
to bring free, educational gardening workshops to local residents. The workshops, which
are offered in English and Spanish, provide information on California native plants,
composting and gardening tips for residents, business owners, and local landscapers.
These partnerships have proven to be diverse in nature and valuable in strengthening the
conservation efforts within CBMWD’s service area, particularly within the more
disadvantaged areas.
Drought Outreach Training
CBMWD conducted Drought Outreach Training for member agency city staff members as
part of its outreach efforts to help the service area meet their mandated conservation
goals. Cities that serve as water retailers are the first in line of contact with residents when
paying water bills and dealing with water related concerns. A handbook was designed for
these city staff members to provide the latest information on the drought, water efficient
rebates, and other conservation information. CBMWD staff provided copies of the
handbook and provided training to member agency city staff members on how to best
respond to water conservation questions.
Drought Gardening Classes
With the increased interest in removing lawns to conserve water, CBMWD partnered with
MWD to host Drought Gardening Classes throughout the service area. These three-hour
classes provide information and the tools on how to create drought tolerant landscaping.
Residents are taught by a landscape professional. Each resident leaves the class with a
better understanding on how water flows outside their home and how to best capture and
use it for irrigation.
OTHER CBMWD CONSERVATION MEASURES WHOLESALE AGENCY PROGRAMS
CBMWD provides financial incentives or equivalent resources, as appropriate and
beneficial to retail agencies, to advance water conservation efforts and effectiveness.
Incentives have thus far been in the form of rebates offered by MWD through its SoCal
Water$mart Program for residential and commercial customers. In addition to rebate
programs, CBMWD continues to participate in other MWD water use efficiency programs,
such as its California Friendly Landscape and Gardening classes.
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Conservation Information Working Group
On a monthly basis, CBMWD meets with its purveyors to discuss various topics pertaining
to water conservation and public outreach. Guest speakers are also invited to provide
insight on new water efficient technologies and programs available.
SCADA Integrated Asset Management Program
The Integrated Asset Management Program is a customized computer software program
that manages assets by identifying operating and maintenance inefficiencies followed by
alarming operators of equipment failures. The software is unique because it uses
Supervisory Control and Data Acquisition System (SCADA) data to monitor the assets and
by doing so, it streamlines processes for asset maintenance and has paved the way for
energy reduction.
CBMWD is currently budgeting approximately $53,000 per year for its conservation
programs. CBMWD also receives additional funding from MWD. In FY 2020-2021,
CBMWD’s conservation programs include a rebate program support, landscaping classes,
and various outreach and education programs.
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9.3 – Existing Demand Management Measures for Retail Suppliers
9.3.1 – Water Waste Prevention Ordinances
The City adopted Ordinance No. 1161 (Appendix M) in October 2009, which further expanded the City’s
water conservation efforts by amending Article VI of Chapter 25 of the Code of the City of Vernon. This
Ordinance established general water waste provisions, as well as conservation measures for Phase I,
Phase II and Phase III water shortages. The water waste provisions apply regardless of supply conditions,
and include:
• Limits on Watering Hours: Watering or irrigating of lawn, landscape or other vegetated area with
potable water is prohibited between the hours of 10:00 a.m. and 5:00 p.m. on any day, except by
use of a hand-held bucket or similar container, a hand-held hose equipped with a positive self-
closing water shut-off nozzle or device, or for very short periods of time for the express purpose
of adjusting or repairing an irrigation system.
• Limit on Watering Duration: Watering or irrigating of lawn, landscape or other vegetated area
with potable water using a landscape irrigation system or a watering device that is not
continuously attended is limited to no more than fifteen (15) minutes watering per day per
station. This subsection does not apply to landscape irrigation systems that exclusively use very
low-flow drip type irrigation systems when no emitter produces more than two (2) gallons of
water per hour and weather based controllers or stream rotor sprinklers that meet a seventy
percent (70%) efficiency standard.
Water Code Section 10631
(e) Provide a description of the supplier’s water demand management measures. This description
shall include all of the following:
(1)(A) For an urban retail water supplier, as defined in Section 10608.12, a narrative description
that addresses the nature and extent of each water demand management measure implemented
over the past five years. The narrative shall describe the water demand management measure that
the supplier plans to implement to achieve its water use targets pursuant to Section 10608.20.
(B) The narrative pursuant to this paragraph shall include descriptions of the following water
demand management measures:
(i) Water waste prevention ordinances.
(ii) Metering.
(iii) Conservation pricing.
(iv) Public education and outreach.
(v) Programs to assess and manage distribution system real loss.
(vi) Water conservation program coordination and staffing support.
(vii) Other demand management measures that have a significant impact on water use as
measured in gallons per capita per day, including innovative measures, if implemented.
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• No Excessive Water Flow or Runoff: Watering or irrigating of any lawn, landscape or other
vegetated area in a manner that causes or allows excessive water flow or runoff onto an adjoining
sidewalk, driveway, street, alley, gutter or ditch is prohibited.
• No Washing Down Hard or Paved Surfaces: Washing down hard or exterior paved surfaces,
including but not limited to sidewalks, walkways, driveways, parking areas, patios or alleys, is
prohibited except when necessary to alleviate safety or sanitary hazards, and then only by use of
a hand-held bucket or similar container, a hand-held hose equipped with a positive self-closing
water shut-off device, a low-volume, high-pressure cleaning machine equipped to recycle any
water used, or a low-volume high-pressure water broom.
• Obligation to Fix Leaks, Breaks or Malfunctions: Excessive use, loss or escape of water through
breaks, leaks or other malfunctions in the water user's plumbing or distribution system for any
period of time after such escape of water should have reasonably been discovered is prohibited
and shall be repaired as soon as reasonably practicable.
• Re-circulating Water Required for Water Fountains and Decorative Water Features: Operating a
water fountain or other decorative water feature that does not use re-circulated water is
prohibited.
• Limits on Washing Vehicles: Using water to wash or clean a vehicle, including but not limited to
any automobile, truck, van, bus, motorcycle, boat or trailer, whether motorized or not is
prohibited, except by use of a hand-held bucket or similar container or a hand-held hose equipped
with a positive self-closing water shut-off nozzle or device. This subsection does not apply to any
commercial vehicle washing facility.
• Drinking Water Served Upon Request Only: Eating or drinking establishments, including but not
limited to a restaurant, hotel, cafe, cafeteria, bar, or other public place where food or drinks are
sold, served, or offered for sale, are prohibited from providing drinking water to any person unless
expressly requested.
• No Installation of Single Pass Cooling Systems: Installation of single pass cooling systems is
prohibited in buildings requesting new water service.
• Limits on Commercial Car Wash and Laundry Systems: Installation of non-recirculating water
systems is prohibited in new commercial conveyor car wash and new commercial laundry
systems.
City crews have been trained in the areas of water waste and actively monitor the City for water waste
activities. The Water Division staff currently tracks total City water demands through billing meter data.
These data are used to evaluate the effectiveness of the water waste prohibitions.
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9.3.2 – Metering
All existing and new City service connections are metered ensuring proper billing by volume. The City has
recently started a Meter Replacement Program with the end goal to replace all meters with AMI meters,
generally beginning with the largest customers. The City is also in the process of commencing a contract
to check all customer meters for accuracy.
There is no large landscape irrigation in the Water Service Area and therefore no need for conversion of
mixed use accounts to multiple meters including a dedicated landscape meter.
9.3.3 – Conservation Pricing
The City does not use conservation pricing for water use reduction. To promote its “exclusively industrial”
nature, the City provides water service at some of the lowest rates in the region to attract commercial
and industrial customers.
The City’s commodity rate for water is the same for all use types (i.e. commercial, industrial, and
residential). Water use in the City, which is primarily commercial and industrial, is more closely linked to
market trends than to the habits of consumers. As a result, the established rate structure provides local
businesses with the security and assurance of availability they need to make daily operational decisions.
Research shows that price elasticity of demand for water among commercial, institutional, and industrial
(CII) customers varies widely depending the end use. Domestic uses (e.g. toilet flushing, food preparation,
general cleaning, etc.) respond in a similar fashion to residential uses, which tend to have a relatively low
price elasticity of approximately -0.2. Water-dependent industrial processes where a high quality source
is required (e.g. food and beverage processing, chemical manufacturing, etc.) tend to have a very low
price elasticity. Industrial processes where a substitute for high quality water exists (e.g. cooling, irrigation,
truck washing, etc.) tend to have a moderate price elasticity.
Given the large volume of water dedicated to CII customers for industrial processes, conservation pricing
has been determined to have a negligible effect on water savings and a negative effect on attracting
commercial and industrial customers to the City.
Water Code Section 526 (a)
Notwithstanding any other provisions of law, an urban water supplier that, on or after January 1,
2004, receives water from the federal Central Valley Project under a water service contract or
subcontract... shall do both of the following:
(1) On or before January 1, 2013, install water meters on all service connections to residential and
nonagricultural commercial buildings... located within its service area.
Water Code section 527
(a) An urban water supplier that is not subject to Section 526 shall do both the following:
(1) Install water meters on all municipal and industrial service connections located within its service
area on or before January 1, 2025.
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9.3.4 – Public Education and Outreach
The City continues to operate a strong outreach program, as it has for the past several decades. Public
information about the City and its mission, programs, and events are constantly disseminated to
numerous interested parties in order to promote water conservation. The City provides information for
customers at the Customer Service Counter and maintains a strong link with the local news media through
press releases of important subjects reinforcing the water conservation message. The City uses numerous
printed materials to send information to the community. The publication includes articles on water
quality, conservation, and infrastructure improvement information. In addition, the Public Utilities
Department publishes an annual water quality report, which provides quality information, and promotes
water conservation. The annual water quality report is electronically delivered by posting on the City
website; notice of availability is mailed to every service address. Customers can request a hard copy be
mailed to them free of charge; hard copies are also available over the counter at Customer Service.
Publications are also available for download on the City’s website at www.cityofvernon.org.
In coordination with CBMWD, the City provides water conservation information and links to wholesaler
programs on its website.
The City is almost entirely industrial and commercial, with a very small residential population. The City
has only one school within its Water Service Area, which is the Vernon City Elementary School. The City’s
Water Division staff gives presentations at the School, which highlight efficient use of resources and water
conservation.
Expansion of the school education program with Vernon Elementary School is underway. The City plans
to create a poster contest to promote water conservation with the school children. The program is
anticipated to consist of providing each age appropriate class with poster paper and a water conservation
related giveaway. The winning posters in three age categories may be displayed in the Customer Service
lobby. The students will also receive information on water supply and simple water conservation tips,
which meet state educational requirements, typically part of the presentations at the school. The City will
track the number of classes which participate to track the effectiveness of the School Education Program.
9.3.5 – Programs to Assess and Manage Distribution System Real Loss
The City’s Water Division reads over one thousand water service meters each month. Meter readers
inspect each service meter for leaks or damage that may adversely impact the functionality or accuracy.
The City’s automated billing system flags high and low meter readings. This information is sent
electronically to maintenance crews who then perform inspections of suspect service meters in an
expedient fashion. The City’s in-house construction crews make water system repairs in an efficient and
productive fashion, providing for significant reduction in water loss. Vernon has a complex database
system that meticulously quantifies water consumption, water production and net water loss for the
entire water distribution system. This allows Vernon staff to continuously monitor water consumption
and water loss in order to ensure that no system failures have occurred and to conserve precious water
supplies. The Water Division has contracted a consultant to prepare a Master Plan, which will include
Demand Management recommendations.
The City has a comprehensive work order system that is used to monitor repairs and maintenance
activities to the water distribution system. This allows staff to quantify problem areas and address
potential failures in a proactive fashion to prevent water loss through large-scale transmission leaks.
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9.3.6 – Water Conservation Program Coordination and Staffing Support
The City’s designated Water Conservation Coordinator is the Water Superintendent. This senior
management position spends approximately five percent of the time managing the provisions in the water
conservation program, implementing the public information program, and planning the school education
program. During periods of declared drought, the time allocated to conservation duties increases. The
City’s conservation coordinator often represents the City at regional and statewide workshops and
organizations. In addition, the conservation coordinator also seeks Federal, State, and local funding to
develop new programs that promote water conservation throughout the City’s Water Service Area.
9.3.7 – Other Demand Management Measures
The construction of new development is limited in the City of Vernon due to the lack of vacant or
underutilized land within the service area. All new Commercial, Industrial, and Institutional development
proceeds as follows:
• Building plans must be submitted to the City’s Building Section for review and approval.
• Water saving appurtenances and fixtures are a requirement of the approval process and
documentation regarding the implementation of such devices is required to obtain a permit.
• A water consumption review is performed based upon the Building Section’s estimated water use.
• An appropriately sized water meter is selected in order to ensure that all consumption is billed by
volume, which in turn provides a financial incentive to encourage water conservation.
The City works in coordination with CBMWD as a member agency in the implementation of conservation
programs to promote CII conservation. CBMWD participates in MWD’s “Save A Buck” region-wide CII
rebate program and helps promote these rebates for use by businesses, schools, and other qualifying
facilities throughout the City’s service area.
Rebates are offered for commercial clothes washers, water brooms, cooling tower conductivity
controllers, x-ray machine recirculating devices, water free urinals, high efficiency toilets, weather-based
irrigation controllers, pre-rinse spray valves, nozzles, and various industrial pressure devices.
In 2002, the California Urban Water Conservation Council (CUWCC) pursued and received a $2.3 million
grant from the California Public Utilities Commission (CPUC) to purchase and install restaurant pre-rinse
spray nozzle valves. The new nozzles use 1.6 gpm compared to 2 to 6 gpm valves. These valves conserve
water, reduce heating costs and reduce waste-water discharge. CBMWD supported CUWCC’s efforts in
marketing the program. The nozzles and installations were provided free of charge to several food services
customers in the City’s Water Service Area.
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9.4 – Implementation over the Past Five Years
The City worked closely with its affiliates to fund and promote regional water conservation programs.
These affiliates include the Gateway Water Management Authority, the Southeast Water Coalition, and
CBMWD.
9.4.1 –Water Waste Prevention
Note that water waste is commonly associated with irrigation. There is extremely limited irrigation in the
City, primarily trees; therefore, there is little opportunity for water waste.
Note that as an industrial city, water represents an expense to running an efficient enterprise. As a results
of the economic downturn, commercial customers in the City have reduced all forms of waste, including
water waste in response to market conditions.
9.4.2 – Meters
The City has purchased some AMI meters as part of a new Meter Replacement Program. The end goal is
to replace all meters with AMI meters. There is an annual budgeted amount for this purpose.
9.4.3 – Conservation Pricing
Conservation pricing is in contrast to the City’s economic model, and was not implemented.
9.4.4 – Public Education and Outreach
The City issued mailers to its customers encouraging water conservation and providing links to water
conservation programs.
The City’s website provides links to CBMWD conservation programs and Metropolitan rebate programs.
The City issues a consumer confidence report annually which includes information of water conservation.
9.4.5 – Programs to Assess and Manage Distribution System Real Loss
The Water Division has contracted a consultant to prepare a Master Plan, which will include Demand
Management recommendations.
The City maintained its work order system to monitor water system repairs and maintenance activities.
The City reconciled its production and deliveries annually to estimate water loss.
Water Code Section 10631
(e) Provide a description of the supplier’s water demand management measures. This description
shall include all of the following:
(1)(A) …a narrative description that addresses the nature and extent of each water demand
management measure implemented over the past five years.
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9.4.6 – Other Demand Management Measures
The City initiated a new CII water audit program in 2015. A notice was issued to the top water users in the
City inviting their participation in the program (see Appendix P).
9.5 – Implementation to Achieve Water Use Targets
As discussed in Section 5.8, the City has achieved its 2020 water use target and is in compliance with
SB X7-7.
The City will continue to work closely with its regional partners to implement water conservation projects
and programs. These partners include CBMWD, the Gateway Water Management Authority, and the
Southeast Water Coalition.
The primary focus of the City will continue to be water conservation programs aimed at CII customers
including water audits, high efficiency toilets, retrofit of industrial water fixtures, and conversion of
industrial processes to recycled water.
Given that residential water demand is around 0.1% of total demand, a number of programs associated
with residential water conservation will not be implemented at the City level. These include Interior and
Exterior Water Audits for Single and Multi-Family Customers, Residential Plumbing Retrofit, Large
Landscape Conservation Programs and Incentives, High-efficiency Washing Machine Rebate Programs,
and Residential Ultra-low-flush Toilet Replacement Program. City residents are still eligible for these
programs through CBMWD and MWD.
9.6 – Water Use Objectives (Future Requirements)
The Water Code requires development of new water use objectives based on specific standards for certain
water use sectors in 2023. These new water use objectives have not yet been developed.
Water Code Section 10631
(f)(1)(A) For an urban retail water supplier, as defined in Section 10608.12, a narrative description
that addresses the nature and extent of each water demand management measure implemented
over the past five years. The narrative shall describe the water demand management measure that
the supplier plans to implement to achieve its water use targets pursuant to Section 10608.20.
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Chapter 10 – Plan Adoption, Submittal, and Implementation
10.1 – General Description
Plan Adoption, Submittal, and Implementation describe the steps taken to adopt and submit the UWMP
and to make it publicly available. Implementation of the UWMP will proceed following submittal to the
state.
10.2 – Inclusion of All 2020 Data
All required 2020 data were included in this report.
10.3 – Notice of Public Hearing
10.3.1 – Notice to Cities and Counties
Los Angeles County was notified of the intent to prepare an UWMP and of the opportunity to comment
on the Draft UWMP. See Appendix D for documentation of the notification to Los Angeles County.
Water Code Section 10621
(b) Every urban water supplier required to prepare a plan shall…at least 60 days prior to the public
hearing on the plan…notify any city or county within which the supplier provides waters supplies
that the urban water supplier will be reviewing the plan and considering amendments or changes
to the plan.
Water Code Section 10642
…The urban water supplier shall provide notice of the time and place of hearing to any city or county
within which the supplier provides water supplies. A privately owned water supplier shall provide
an equivalent notice within its service area…
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10.3.2 – Notice to the Public
The public was notified of the opportunity to comment on the Draft UWMP via publication in the local
newspaper and via the City website. See Appendix Q for documentation of the notice to the public.
Water Code Section 10642
…Prior to adopting either [the plan or water shortage contingency plan], the urban water supplier
shall make both the plan and the water shortage contingency plan available for public inspection
and shall hold a public hearing or hearings thereon. Prior to any of these hearings, notice of the
time and place of the hearing shall be published within the jurisdiction of the publicly owned water
supplier pursuant to Section 6066 of the Government Code [see below]. The urban water supplier
shall provide notice of the time and place of a hearing to any city or county within which the supplier
provides water supplies.
Government Code section 6066
Publication of notice pursuant to this section shall be once a week for two successive weeks. Two
publications in a newspaper published once a week or oftener, with at least five days intervening
between the respective publication dates not counting such publication dates, are sufficient. The
period of notice commences upon the first day of publication and terminates at the end of the
fourteenth day, including therein the first day.
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10.4 – Public Hearing and Adoption
10.4.1 – Public Hearing
The public hearing was conducted on June 15, 2021. See Appendix Q for documentation on the public
hearing.
10.4.2 – Adoption
The UWMP was adopted on June 15, 2021. See Appendix R for a copy of the resolution of adoption.
Water Code Section 10642
…Prior to adopting either [the plan or water shortage contingency plan], the urban water supplier
shall make both the plan and the water shortage contingency plan available for public inspection
and shall hold a public hearing or hearings thereon. Prior to any of these hearings, notice of the
time and place of the hearing shall be published within the jurisdiction of the publicly owned water
supplier pursuant to Section 6066 of the Government Code [see below]. The urban water supplier
shall provide notice of the time and place of a hearing to any city or county within which the supplier
provides water supplies.
Government Code section 6066
Publication of notice pursuant to this section shall be once a week for two successive weeks. Two
publications in a newspaper published once a week or oftener, with at least five days intervening
between the respective publication dates not counting such publication dates, are sufficient. The
period of notice commences upon the first day of publication and terminates at the end of the
fourteenth day, including therein the first day.
Water Code Section 10642
…After the hearing or hearings, the plan or water shortage contingency plan shall be adopted as
prepared or as modified after the hearing.
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10.5 – Plan Submittal
The 2020 UWMP was submitted to the State prior to the deadline of July 1, 2021. A CD or hard copy of
the adopted 2020 UWMP will be submitted to the California State Library within 30 days of adoption.
There have been no updates to the City’s Water Shortage Contingency Plan during the past five years.
Submittal of the 2010 UWMP to Los Angeles County satisfies CWC 10635(c).
10.5.1 – Electronic Data Submittal
The 2020 UWMP, including the WSCP, and associated data and other information were electronically
submitted to the State prior to the deadline of July 1, 2021.
Water Code Section 10621
(e) Each urban water supplier shall update and submit its 2020 plan to the department by July 1,
2021…
Water Code Section 10644
(a)(1) An urban water supplier shall submit to the department, the California State Library, and any
city or county within which the supplier provides water supplies a copy of its plan no later than 30
days after adoption.
Water Code Section 10635
(c) The urban water supplier shall provide that portion of its urban water management plan
prepared pursuant to this article to any city or county within which it provides water supplies no
later than 60 days after the submission of its urban water management plan.
Water Code Section 10644 (a)(2)
The plan, or amendments to the plan, submitted to the department … shall be submitted
electronically and shall include any standardized forms, tables, or displays specified by the
department.
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10.6 – Public Availability
The adopted UWMP and WSCP will be made available to the public on the City website and the DWR
website within 30 days of submittal to the State.
10.7 – Amending an Adopted UWMP or Water Shortage Contingency Plan
10.7.1 – Amending a UWMP
In the event the UWMP is amended in the future, the City will meet all established requirements for the
amendment process.
10.7.2 – Amending a Water Shortage Contingency Plan
In the event the WSCP is amended in the future, the City will meet all established requirements for the
amendment process.
Water Code Section 10645
(a) Not later than 30 days after filing a copy of its plan with the department, the urban water
supplier and the department shall make the plan available for public review during normal business
hours.
(b) Not later than 30 days after filing a copy of its water shortage contingency plan with the
department, the urban water supplier and the department shall make the plan available for public
review during normal business hours.
Water Code Section 10621
(d) The amendments to, or changes in, the plan shall be adopted and filed in the manner set forth
in Article 3 (commencing with Section 10640).
Water Code Section 10644
(a)(1) Copies of amendments or changes to the plans shall be submitted to the department, the
California State Library, and any city or county within which the supplier provides water supplies
within 30 days after adoption.
Water Code Section 10644 (b)
If an urban water supplier revises its water shortage contingency plan, the supplier shall submit to
the department a copy of its water shortage contingency plan prepared…no later than 30 days after
adoption, in accordance with protocols for submission and using electronic reporting tools
developed by the department.
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City Council Agenda Item Report
Agenda Item No. COV-653-2021
Submitted by: Joanna Moreno
Submitting Department: Public Utilities
Meeting Date: June 15, 2021
SUBJECT
2020 Urban Water Management Plan
Recommendation:
A. Find that the proposed action is exempt under the California Environmental Quality Act (CEQA) in
accordance with Water Code Section 10652, which exempts the preparation and adoption of urban
water management plans from CEQA requirements, and CEQA Guideline Section 15061(b)(3), the
general rule that CEQA only applies to activities that may have a significant effect on the environment,
because the plan referenced herein is merely an update of the existing 2015 Urban Water Management
Plan; and
B. Adopt Resolution No. 2021-18 approving and adopting the City of Vernon 2020 Urban Water
Management Plan.
Background:
Preparation of an Urban Water Management Plan (UWMP) is required by the California Department of
Water Resources (DWR) for all urban water suppliers within the State of California. Urban water
suppliers are defined as publicly or privately owned water suppliers that provide water for municipal
purposes, either directly or indirectly, to more than 3,000 customers, or supply more than 3,000 acre-feet
(AF) of water annually. UWMPs must meet requirements established in the California Water Code and
the Urban Water Management Planning Act. In January of 2021, the City of Vernon entered into a
Services Agreement with Michael Baker International, Inc. (Michael Baker), to prepare the City's 2020
UWMP, and a draft has been completed in accordance with the UWMP 2020 Guidebook.
Via Resolution 2016-26, City Council adopted Vernon's 2015 UWMP. The California Water Code
requires that water retailers update their UWMP every five years. The UWMP is intended to serve as
long-term resource planning to ensure that adequate water supplies are available to meet existing and
future water needs. Moreover, the UWMP is useful for local, regional, and statewide water planning.
Among other things, the UWMP:
•Assesses the reliability of water sources over a 20-year planning time frame;
•Describes demand management measures and water shortage contingency plans; and
•Discusses the current use and planned use of recycled water.
Per the State Water Resources Control Board and pursuant to the Water Conservation Act of 2009, the
City was required to target a twenty percent (20%) reduction in per capita water use by 2020. The City
has achieved the targeted twenty percent (20%) reduction, as detailed in the 2020 UWMP.
Every urban water supplier that prepares a plan is required to notify any city or county within which the
supplier provides water that a plan review is underway, and that the supplier is considering amendments
or changes to the plan. The plan should be made available for public inspection, and a public hearing
should be noticed. Los Angeles County was notified of the intent to prepare an UWMP and of the
opportunity to comment on the Draft UWMP. Pursuant to Government Code Section 6066, notice of
public hearing was properly published in the Huntington Park Bulletin on May 20 and 27, 2021, and on
the City's website.
Fiscal Impact:
There is no fiscal impact associated with this report.
Attachments:
1. Resolution No. 2021-18
2. Notice of City Council Public Hearing