Central Basin Municipal Water District is a public agency that purchases imported water from the Metropolitan Water District of Southern California (MWD). Central Basin wholesales the imported water to cities, mutual water companies, investor-owned utilities and private companies in southeast Los Angeles County. (Imported water is transported through the expansive Colorado River Aqueduct system and from Northern California.) Central Basin also supplies water used for groundwater replenishment and provides the region with recycled water for municipal, commercial and industrial use. There are 24 cities in Central Basin's service area.