West Basin Municipal Water District is a wholesale water agency that provides imported drinking water to 17 cities and unincorporated areas of Los Angeles County throughout its 185-square-mile service area. An innovative public agency, West Basin is a recognized leader in the production of recycled water, conservation, and education programs.

West Basin currently manages a diverse water supply portfolio that includes imported water from the Colorado River and Northern California, locally-produced recycled water, desalted groundwater, and conserved water. Additionally, West Basin is researching ocean water desalination as a drought-proof supply of drinking water.