California Water Service Group (NYSE:CWT) (NYSE: CWT) is a publicly traded holding company that provides regulated water utility services through its operating subsidiaries. The company’s core business encompasses the treatment, distribution and management of potable water, as well as wastewater and recycled water services in its service territories. In addition to traditional water supply activities, the group offers backflow prevention programs, meter reading, conservation education and infrastructure maintenance to support long-term reliability and quality.
Through its principal subsidiary, California Water Service (Cal Water), the company serves communities across California’s Central Coast, Central Valley, Sacramento region, South San Francisco Peninsula and South Lake Tahoe areas. Two additional subsidiaries, New Mexico Water Service Company and Hawaii Water Service Company, extend the group’s footprint to select locations in New Mexico and Hawaii. A fourth subsidiary, Washington Water Service Company, delivers water utility, wastewater and emergency water supply services to customers in western Washington state.
Founded in 1926, California Water Service Group has evolved from a single California waterworks into one of the largest publicly traded, investor-owned water utilities in the United States. The company reorganized in the late 20th century to establish a holding company structure that enables regional focus and regulatory compliance across multiple states. Its operations are subject to oversight by the California Public Utilities Commission, the New Mexico Public Regulation Commission, the Hawaii Public Utilities Commission and the Washington Utilities and Transportation Commission.
Headquartered in San Jose, California, the company is led by an executive leadership team with deep experience in engineering, regulatory affairs and finance, supported by a board of directors drawn from the utilities and public policy sectors. Through ongoing capital investments in treatment facilities, pipeline replacement and automated metering, California Water Service Group aims to maintain high water quality standards, advance conservation initiatives and meet the future needs of its customers.