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Draft 2020 Urban Water Management Plan

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Draft 2020 Urban Water Management Plan Draft CITY OF SAN DIEGO 2020 Urban Water Management Plan February 2021 Acknowledgements The 2020 San Diego UWMP was prepared on behalf of: City of San Diego Public Utilities Department 9192 Topaz Way, San Diego, MS9061 San Diego, CA 92123 City of San Diego Project Team: Richard Stevens, Senior Civil Engineer, P.E. Khuram Shah, Associate Engineer/Project Manager Elham Tabatabaii, Assistant Engineer In coordination with: Planning Department Department of Sustainability Public Utilities Department (External Affairs, Water Conservation Program, Engineering and Program Management Division, Water System Operations, Recycled Water Program and Pure Water Program) San Diego County Water Authority Prepared by: CDM Smith 703 Palomar Airport Rd #300 Carlsbad, CA 92011 CDM Smith Project Team: Dan Rodrigo Ann Bechtel Bill Fernandez Table of Contents Section 1: Introduction and Plan Requirements ..................................................................9 1.1 Purpose of 2020 Urban Water Management Plan ................................................................. 9 1.2 Overview of the City Water and Wastewater Systems .......................................................... 11 1.3 Important Regulatory Changes Since the 2015 Urban Water Management Plan ............... 12 1.4 Related Water Policies and Plans ........................................................................................... 14 1.4.1 City’s Comprehensive Policy for a Sustainable Water Supply in San Diego ............... 14 1.4.2 City’s General Plan and City Community Plans ........................................................... 14 1.4.3 City’s Climate Action Plan and Resiliency Plan ............................................................. 15 1.4.4 City’s Water Shortage Contingency Plan ...................................................................... 15 1.4.5 San Diego County Water Authority 2020 UWMP ......................................................... 16 1.5 Plan Coordination ................................................................................................................... 16 1.6 Public Participation and Plan Adoption ................................................................................. 17 1.7 Plan Organization ................................................................................................................... 18 Section 2: Utility Service Area Description ..........................................................................19 2.1 Geography and Demographics .............................................................................................. 20 2.2 Climate and Resiliency ........................................................................................................... 21 2.3 Water Supply Sources and Utility Systems ............................................................................ 23 2.3.1 MWD System ................................................................................................................. 23 2.3.2 SDCWA System .............................................................................................................. 26 2.3.3 City’s Water System and Facilities ................................................................................ 29 2.4 Wastewater Treatment and Water Reclamation System ...................................................... 32 2.4.1 Point Loma Wastewater Treatment Plant .................................................................... 35 2.4.2 North City Water Reclamation Plant ............................................................................ 35 2.4.3 South Bay Water Reclamation Plant............................................................................. 35 2.4.4 Non-potable Recycled Water Facilities ......................................................................... 35 Section 3: Historical and Projected Water Use ...................................................................37 3.1 Historical Water Use by Sector .............................................................................................. 37 3.2 Historical Non-revenue Water and Non-potable Recycled Water ........................................ 39 3.3 Projected Potable Water Demands ....................................................................................... 40 3.3.1 Projected Low-income Residential Water Demands ................................................... 41 3.3.2 Projected Non-Revenue Water and Non-Potable Recycled Water.............................. 42 3.3.3 Total Water Demand Forecast ...................................................................................... 43 2020 San Diego Urban Water Management Plan | 3 Table of Contents Section 4: Water Supplies ........................................................................................................45 4.1 City Local Surface Water ........................................................................................................ 46 4.2 Local Groundwater Basins ..................................................................................................... 47 4.2.1 Historical Groundwater Basin Use ............................................................................... 48 4.2.2 Future Groundwater Use .............................................................................................. 48 4.3 Recycled Water(Non-potable Reuse) ..................................................................................... 48 4.3.1 Recycled Water System ................................................................................................ 49 4.3.2 Non-potable Recycled Water Use ................................................................................. 50 4.3.3 Future Non-potable Recycled Water Use ..................................................................... 51 4.3.4 Maximization of Recycled Water .................................................................................. 52 4.4 SDCWA Purchased Water ....................................................................................................... 54 4.4.1 MWD Water Supply Diversification Strategy ................................................................ 55 4.4.2 SDCWA Water Supply Diversification Strategy............................................................. 57 4.5 Summary of Water Supplies .................................................................................................. 60 Section 5: Demand Management Measures .......................................................................61 5.1 Baseline Daily Per Capita Water Use ..................................................................................... 61 5.2 Per Capita Water Use Targets ................................................................................................ 63 5.2.1 2020 Target Compliance ............................................................................................... 63 5.2.2 Water Conservation Targets Beyond 2020 .................................................................. 64 5.3 City’s Water Conservation Program ....................................................................................... 67 5.4 Drought Response .................................................................................................................. 67 5.4.1 Basic Public Education and Outreach Methods ........................................................... 67 5.4.2 Traditional and Specific Public Education and Outreach Methods ............................. 68 5.4.3 Unique Public Education and Outreach Methods ....................................................... 68 5.4.4 Metering ........................................................................................................................ 69 5.4.5 Volumetric Water Use Pricing ....................................................................................... 69 5.4.6 Distribution System Real Loss ...................................................................................... 69 5.4.7 Water Conservation Program Coordination ................................................................ 69 5.5 Planned Implementation to Achieve Water Use Targets ...................................................... 69 5.5.1 Residential Water Survey Programs ............................................................................. 69 5.5.2 Commercial Landscape Survey Programs ................................................................... 70 5.5.3 Water Conservation Rebate Program .......................................................................... 70 5.5.4 Water-Wise Business Survey ........................................................................................ 71 5.5.5 Water Waste Investigations .......................................................................................... 71 5.5.7 Get It Done App for iPhone® & Android® ..................................................................... 72 5.5.8 SoCal Water$mart Rebates ........................................................................................... 72 5.5.9 Current Customer Contests .......................................................................................... 72 5.5.10 General Plan Housing Element ................................................................................... 73 5.6 Sub-metering Ordinance ........................................................................................................ 74 5.7 Monitoring
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