California Water Service ★ 0Sign in to vote

California Water Service Group provides regulated water and wastewater utility services through subsidiaries operating in California, Hawaii, New Mexico, Texas, and Washington. Its largest subsidiary, California Water Service, serves communities across California, while the group’s other utilities operate in their respective states. Company materials describe water distribution, treatment, quality testing, wastewater services, infrastructure maintenance, and customer programs. The group serves residential and business customers within defined utility territories. This profile covers the parent company and its regional operating utilities; customers should check the group’s service-area information to identify the correct local provider.