Suburban Water Systems (Suburban)
Suburban serves over 300,000 people in a service area covering all or portions of Glendora, Covina, West Covina, La Puente, Hacienda Heights, City of Industry, Whittier, La Mirada, La Habra, Buena Park, and unincorporated portions of Los Angeles and Orange counties.
Groundwater comes from Suburban-owned wells in the Main San Gabriel Basin and Central Basin. Suburban's groundwater is supplemented with water purchased mainly from member agencies of the Metropolitan Water District of Southern California, Covina Irrigating Company, and California Domestic Water Company.