A big fish in California's water industry pond, California Water Service Group is in the swim in three other states, as well. The company's main subsidiary, regulated utility California Water Service Company (Cal Water), keeps water flowing for 480,300 customers in California. California Water Service Group's other water utility subsidiaries include Washington Water (15,800 customers), New Mexico Water (7,900 water and wastewater customers), and Hawaii Water (4,300 customers). The company's CWS Utility Services unit contracts to provide water system operation, meter reading, and billing services. All told, California Water Service Group provides services to about 2 million people in 100 communities.