The existing and future limitations of water resources in Southern California have resulted in the need for water supplies in the Central and West Coast basins to be managed more efficiently. As the regional groundwater management agency for two of the most utilized groundwater basins in the state of California , the WRD plays an integral role in overall water resource management in southern Los Angeles County .

As the population of the region continues to increase, it becomes even more important to maximize the use of both imported and local water sources available to the WRD.

The WRD manages groundwater for nearly four million residents in 43 cities of southern Los Angeles County . The 420 square mile service area uses about 250,000 acre-feet of groundwater per year, which equates to nearly 40% of the total demand for water. The WRD ensures that a reliable supply of high quality groundwater is available through its clean water projects, water supply programs, and effective management principles.

Visit the Projects and Programs section of this site to learn more about the WRD's individual water projects and programs.