This deceptively beautiful scene shows a leaking slide gate repaired during Metropolitan’s 2019/20 shutdown season, which continued even amid the COVID-19 pandemic. THE METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA ANNUAL REPORT FOR THE FISCAL YEAR July 1, 2019 to June 30, 2020 LOS ANGELES, CALIFORNIA 2020 CONTENTS Chapter Page List of Abbreviations ............................................................................................ ix About Metropolitan .............................................................................................. xiii Composition of the Metropolitan Water District of Southern California .............. xv Directors ............................................................................................................... xvi Board of Directors ................................................................................................ xx Board Committees ................................................................................................ xxii Historical Roll of Directors................................................................................... xxiv Organization Chart ............................................................................................... xxxvi Executive Management ........................................................................................ xxxvii Staff ...................................................................................................................... xxxviii Introduction .......................................................................................................... 1 1. Delivering Metropolitan’s Water Supplies ....................................................... 5 Major Accomplishments for Fiscal Year 2019/20 ............................................ 9 System Operations and Planning .............................................................. 9 2. Strategic Water Initiatives ................................................................................. 21 Bay-Delta Initiatives ......................................................................................... 21 Long-Term Actions ...................................................................................... 21 Delta Conveyance ..................................................................................... 21 Amendments to State Water Project Contracts ......................................... 23 California EcoRestore ............................................................................... 23 Sites Reservoir........................................................................................... 24 Near-Term Actions ....................................................................................... 24 Regulatory Activities ................................................................................ 24 Science Activities ..................................................................................... 24 Delta Islands Activities ............................................................................. 25 Emergency Preparedness Plan .................................................................. 25 Colorado River Resources ............................................................................... 26 Record Low Water Use ............................................................................. 26 Bard Seasonal Fallowing Program ............................................................ 27 Metropolitan, Coachella and Desert Exchange Agreements ..................... 27 Southern Nevada Water Authority Partnership ........................................ 28 Salinity Control Program .......................................................................... 28 3. Water Resource Management ........................................................................... 31 State Water Project Resources .......................................................................... 32 Water Storage Programs ............................................................................... 32 Semitropic/Metropolitan Water Banking and Exchange Program ............ 32 Arvin-Edison/Metropolitan Water Management Program ........................ 35 Antelope Valley East-Kern Water Agency/Metropolitan Water Management Program ............................................................................. 35 Antelope Valley East-Kern Water Agency/Metropolitan Water Management High Desert Water Bank Program ..................................... 35 Kern Delta/Metropolitan Water Management Program ............................ 35 Mojave/Metropolitan Water Storage Program .......................................... 36 Water Transfers and Exchanges .................................................................... 36 San Gabriel Valley Municipal Water District Exchange........................... 36 ii CONTENTS Chapter Page Colorado River Resources ................................................................................ 36 Water Supply Acquisitions and Exchanges .................................................. 37 Local Resources ................................................................................................ 40 Water Recycling and Groundwater Recovery ............................................... 40 Stormwater ................................................................................................... 41 Seawater Desalination .................................................................................. 41 Groundwater Storage .................................................................................... 41 Conservation and Water-Use Efficiency ........................................................... 43 Water Resource and System Planning .............................................................. 44 Integrated Water Resources Planning ........................................................... 44 Future Supply Actions Program .................................................................... 44 Water Resource Data .................................................................................... 45 4. Water System Operations .................................................................................. 51 Water Treatment ............................................................................................... 51 Water Quality ................................................................................................... 53 Regulations ................................................................................................... 53 Water Quality Monitoring ............................................................................ 54 Chemical/Physical .................................................................................... 54 Total Dissolved Solids .............................................................................. 58 Disinfection Byproducts ........................................................................... 58 Microbiological......................................................................................... 68 System Management Monitoring .................................................................. 69 Cyanobacteria and Algae Control Program .............................................. 69 Quagga Mussel Control Program .............................................................. 69 PFAS (Per- and Polyfluoralkyl Substances) ................................................. 70 Nitrosamines ................................................................................................. 70 Source Water Protection ................................................................................... 73 Watershed Management and Protection ....................................................... 73 Salinity Control ............................................................................................. 73 Uranium Mill Tailings Cleanup .................................................................... 73 Chromium 6 Remediation ............................................................................. 73 Perchlorate Remediation ............................................................................... 74 Technology Assessment ................................................................................... 74 Treatment Process Optimization and Development ...................................... 74 Potable Reuse ................................................................................................... 75 Applied Research .............................................................................................. 75 Water Quality Grants ........................................................................................ 76 Service to Member Agencies and Drinking Water Industry ............................. 76 Conveyance, Distribution and Support ............................................................. 80 Conveyance and Distribution ........................................................................ 80 Operations Support Services ......................................................................... 81 Manufacturing Services ............................................................................ 81 Construction Services ............................................................................... 82 Power Equipment and Reliability ............................................................. 82 Fleet Services ...........................................................................................