Lake Isabella / California / United States
Founded in 1926, California Water Service Group provides a range of regulated and nonregulated utility services to more than 2 million people in over 100 communities throughout the United States. It operates California Water Service Company, which is one of the largest investor-owned water utilities in the United States. It serves more than 460,000 customers in California. The company operates more than 28 customer and operations centers. California Water Service Group operates various subsidiaries, including Washington Water Service Company, New Mexico Water Service Company, Hawaii Water Service Company and CWS Utility Services. It offers online bill payment services. The company s Web site provides information related to water fluoridation and main flushing and hard water.