California Water Service Company (Cal Water)

Service Provider in San Jose, California

California Water Service Company (Cal Water) is the largest investor-owned American water utility west of the Mississippi River and the third largest in the country. Formed in 1926, the San Jose-based company serves more than 473,100 customers through 28 Customer and Operations Centers throughout the state. Cal Water is the largest subsidiary of the California Water Service Group, which also includes Washington Water Service Company, New Mexico Water Service Company, Hawaii Water Service Company, HWS Utility Services, and CWS Utility Services. As a whole, the Group provides high-quality regulated and non-regulated utility services to approximately 2 million people in 100 communities. Company-wide, our employees share a commitment to being the leader in providing our customers and communities with traditional, innovative, and affordable utility services. For us, it’s all about customer service. After all, there is a reason we have “service” in our name. We are committed to meeting the needs of our customers now and in the future, and our respect for the environment and the earth’s water supply is reflected in the way we do business. By operating in a way that does not compromise our ability to meet the needs of future generations, we bring shared value to customers, stockholders, and employees. We provide a life-sustaining, finite natural resource, and as such, have historically operated using sound environmental practices; today, our efforts are focused on the three areas where we can make the greatest difference while continuing to provide affordable water and wastewater services: water quality and reliability, conservation, and efficient operations.


Certifications, Standards and Eco-Labels

California Water Service Company (Cal Water) has obtained the following Certifications, Standards and Eco-Labels


1720 North First Street
San Jose, California
USA 95112
(800) 750-8200

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