Water Sources

The Los Angeles County Waterworks Districts (LACWD), a division of Los Angeles County Public Works, provides customers with water from three sources: local groundwater and water imported through the State Water Project (SWP) and the Colorado River Aqueduct (CRA).
The State Water Project is a system of reservoirs, pump stations, storage facilities, power plants, and 660 miles of pipes and canals that spans two-thirds the length of California. LACWD purchases imported water from local SWP contractors including Antelope Valley-East Kern Water Agency, Santa Clarita Valley Water Agency and Metropolitan Water District of Southern California, or regional wholesale water agencies such as Los Angeles Department of Water and Power and West Basin Municipal Water District.
Los Angeles County Waterworks Districts
District No. 21 – Kagel Canyon
District No. 40 – Antelope Valley
In an effort to ensure supply reliability, District No. 40 is undertaking projects to store excess imported water in the ground during wet years so that it can be extracted and used during dry years. District No. 40 has designed many of its groundwater wells so that excess treated imported water in the District’s distribution system can be injected through the wells and stored until a future time when it is needed. This program is called aquifer storage and recovery (ASR). District No. 40 is also working with AVEK to utilize large undeveloped areas in the Antelope Valley to deliver imported water and allow it to infiltrate into the ground where it will be stored. Subsequently, new wells will extract this water at a later time when it is needed.
District No. 40 also has an agreement with the Los Angeles County Sanitation Districts to use over 13,000 acre-feet of highly treated wastewater produced at their Palmdale and Lancaster Water Reclamation Plants on the North Los Angeles County Regional Recycled Water Project. This “recycled water” will be made available through construction of a completely separate water distribution system for irrigation and other applications that do not require the water to be drinkable. This project will decrease the region’s reliance on imported water and local groundwater supplies.
District No. 36 – Val Verde
District No. 37 – Acton
District No. 29 – Malibu (Including Marina del Rey Water System)
The following agencies provide SWP water to our service areas: