Stockholder Information

Company Profile

California Water Service Group (Group) is the third largest investor-owned water utility in the United States. A holding company formed in 1997, Group is a Delaware corporation and the parent company of California Water Service (Cal Water), Washington Water Service Company (Washington Water), New Mexico Water Service Company (New Mexico Water), Hawaii Water Service Company (Hawaii Water), CWS Utility Services, and HWS Utility Services. The six subsidiary companies provide regulated and non-regulated water service to nearly 2 million people in 100 communities. The company’s common stock trades on the New York Stock Exchange under the symbol CWT.

Shareholder Contact

Investor Center website

Telephone inquiries
1-877-373-6374 (US, Canada, Puerto Rico)
1-781-575-3100 (non-US)

Written requests
P.O. Box 505000
Louisville, KY 40233-5000

By overnight delivery:
462 South 4th Street, Suite 1600
Louisville KY 40202


Shareholder Online Inquiries

Bond Registrar

If you are an individual bondholder with questions about California Water Service Group first mortgage bonds, please contact the US Bank Trust, N.A.:

U.S. Bank Trust, N.A.
One California Street
San Francisco, CA 94111-5402
(415) 273-4580

Corporate Secretary

If you are an individual stockholder with general questions about California Water Service Group and its subsidiaries, please contact the office of the Corporate Secretary:

Michelle Mortensen
Corporate Secretary
California Water Service Group
1720 N. First Street
San Jose, CA 95112
Phone: (408) 367-8200
Fax: (408) 367-8430