UWM Plan - Municipal Water District of Orange County

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Executive Summary Background and Purpose Enacted in 1983, the Urban Water Management Planning Act (Act) requires every urban water supplier 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 to prepare and adopt an urban water management plan at least once every five years. The Municipal Water District of Orange County (MWDOC), a water wholesaler and regional planning agency, fits the defined criteria and has prepared its 2010 Regional Urban Water Management Plan (Plan) to address all the requirements set forth in the State of California Water Code Section 10610 through 10657. Since its passage, many amendments have been added to the Act. These changes are intended to encourage increased regional planning and the cooperative management of California’s most precious commodity – water. As a result, urban water management plans have evolved to become the following: • Foundational documents and sources of information for Water Supply Assessments (California Water Code Section 10613) and Written Verifications of Water Supply (California Water Code Section 66473.7); • Long-range planning documents for water supply; • Long-range planning documents for water use efficiency; • Source data for the development of regional water plans; • Source documents for cities and counties preparing their General Plans; • Key components of Integrated Regional Water Management Plans; and • A condition of eligibility for receipt of certain State grant funds. For MWDOC, the benefits of updating its Plan extend beyond legislative compliance. The regional approach of documenting water-service planning allows MWDOC to do all of the following: • Evaluate supply-reliability goals for the region and provide a comprehensive assessment of water resource needs in its service area; • Provide a regional perspective on current and proposed water use efficiency goals and programs, and identify cost-effective measures that can be accomplished; • Provide assistance to maximize the beneficial use of recycled water and other local resource supplies that reduce the need for imported supplies; and Municipal Water District of Orange County 2010 Regional Urban Water Management Plan Final E-1
Executive Summary • Offer opportunities for public participation through publicly-noticed meetings and provide information that will allow the public to gain a better understanding of the region’s comprehensive water planning. The region served by MWDOC is located in Orange County, California and includes 26 cities and water districts, referred to as MWDOC member agencies. Since MWDOC is a wholesaler of imported water for the region, it has taken a regional approach in compiling this Plan for the purpose of providing a comprehensive assessment of the region’s water services, sources and supplies. This Plan documents information on all sources of water supplies for the region – imported water, groundwater, surface water, recycled water, and wastewater – as a summary of information for regional planning. MWDOC is a member agency of the Metropolitan Water District of Southern California. Metropolitan is a consortium of 28 cities and water districts that provides supplemental potable water supplies imported from the Colorado River Aqueduct (CRA) and State Water Project (SWP) to parts of Southern California. MWDOC purchases imported water from these sources from Metropolitan and distributes the water to its member agencies, which provide retail water services to the public. MWDOC currently only supplies imported water from Metropolitan Water District of Southern California (Metropolitan) as a source of water to the region. While MWDOC is not currently responsible for any of the projects or sources other than imported supply discussed in this Plan, it actively supports development of local water supply projects and sources. Plan Findings Water Service Reliability Based on the preliminary information gathered, the Plan concludes that the MWDOC service area will have sufficient existing and planned supplies to meet full service demands under every water-year hydrologic scenario from 2015 through 2035. This does not necessarily mean that moving into water supply allocations to deal with specific water shortage situations will never be necessary. At times, water supply allocations may be necessary to preserve storage to meet demand over prolong periods of drought. Retail consumptive demand is projected to grow at a slower rate of 0.5% per year compared to historical demand growth of 1.54% per year. Water demand for municipal and industrial use is projected to grow from approximately 485,000 acre-feet per year (AFY) at the present time to nearly 568,000 AFY in 2035. The Water Conservation Bill of 2009 (SBx7-7), the water conservation component to the Delta legislative package, requires each urban retail water supplier to develop urban water use targets to help meet the goal to reduce the statewide average per capita daily water consumption by 20% by 2020 and the interim reduction goal of 10% by 2015. The Municipal Water District of Orange County 2010 Regional Urban Water Management Plan Final E-2
Page 1 and 2: Municipal Water District of Orange
Page 3 and 4: Table of Contents Contents Executiv
Page 5 and 6: Table of Contents 6. Recycled Water
Page 7 and 8: Table of Contents List of Figures F
Page 9 and 10: Acronyms GAC GAP GMFP GPCD gpm GRF
Page 11: Message from the Board of Directors
Page 15 and 16: Executive Summary When comparing su
Page 17 and 18: Executive Summary • Promoting par
Page 19 and 20: 1. Introduction 1.1. Urban Water Ma
Page 21 and 22: Section 1 Introduction • Long-ran
Page 23 and 24: Section 1 Introduction term by vote
Page 25 and 26: Section 1 Introduction For more tha
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Page 29 and 30: Section 2 Water Demand 600,000 2.5
Page 31 and 32: Section 2 Water Demand Table 2-1: C
Page 33 and 34: Section 2 Water Demand used to fill
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Page 37 and 38: Section 2 Water Demand o 10 percent
Page 39 and 40: Section 2 Water Demand These target
Page 41 and 42: Section 2 Water Demand under SBx7-7
Page 43 and 44: Section 2 Water Demand Legislation
Page 45 and 46: 3. Water Sources and Supply Reliabi
Page 47 and 48: Section 3 Water Sources and Supply
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Page 57 and 58: State Water Project Programs and Lo
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Section 3 Water Sources and Supply
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3.3.2. San Juan Basin Section 3 Wat
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3.3.8. Recharge Facilities for OCWD
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4. Demand Management Measures 4.1.
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4.2. BMP Implementation in MWDOC Se
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Section 4 Demand Management Measure
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Section 5 Water Supplies Contingenc
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6. Recycled Water 6.1. Agency Coord
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Section 6 Recycled Water outfalls a
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Section 6 Recycled Water IRWD’s r
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Section 6 Recycled Water IRWD Los A
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Section 6 Recycled Water OCWD Groun
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6.4.2. Indirect Potable Reuse Secti
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7. Future Water Supply Projects and
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Section 7 Future Water Supply Proje
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Section 8 UWMP Adoption Process Thi
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Section 8 UWMP Adoption Process Cit
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Appendices A. Urban Water Managemen
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CALIFORNIA WATER CODE DIVISION 6 PA
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and county, city, regional agency,
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(4) A detailed description and anal
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dated December 10, 2008, as it may
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the agencies participating in the p
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service area at the end of 5, 10, 1
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10631, that achieve water savings s
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"Memorandum of Understanding Regard
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Demand “Bump” Factors for 2010
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Table 1. Per-Capita Retail Water Us
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Appendix C California Urban Water C
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Agency: Municipal Water District of
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Urban Water Management Plan checkli
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Calif. Water No. UWMP requirement a
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Municipal Water District of Orange
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List of Tables and Figures TABLES T
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Section 2: Metropolitan Water Distr
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Section 3: Development Process In p
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MWDOC’s allocation plan. Moreover
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Base Period Interim Agricultural Wa
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Shortage Levels: The model allocate
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to 2008; in order to incorporate th
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Section 5: Plan Implementation This
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agencies and Board Committee member
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Tracking and Reporting In preparing
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It important to note, MWDOC does no
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Appendix A List of Acronyms: AF- Ac
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Appendix C MWDOC Growth Adjustment
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Appendix F Letters of Notification
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Appendix H Resolution of Adoption o
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8001 Irvine Center Drive, Suite 110
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UWM Plan - Municipal Water District of Orange County

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