California Water Service Group is a leading regulated utility company specializing in the provision of water and wastewater services across the western United States. As the third-largest investor-own... California Water Service Group is a leading regulated utility company specializing in the provision of water and wastewater services across the western United States. As the third-largest investor-owned and publicly traded water utility in the country, the company serves more than two million people through its network of subsidiaries, which operate in California, Hawaii, New Mexico, Texas, and Washington. Its core operations encompass the production, purchase, treatment, storage, testing, and distribution of water for a wide range of uses, including residential, commercial, industrial, public authority, agricultural, and fire protection purposes.
Founded in 1926 and headquartered in San Jose, California, California Water Service Group has established itself as a key infrastructure provider, with a pronounced commitment to water quality, environmental stewardship, and customer service. The company’s subsidiaries manage both regulated and unregulated utilities, delivering water, wastewater, and recycled water services. California Water Service Group also regularly engages in community initiatives, technological innovation, and sustainability practices, earning recognition for corporate responsibility and trustworthiness in the industry. Its strategic acquisitions and constant infrastructure investments underline its role as a critical player in sustaining public health and supporting economic development in the regions it serves.