Supplier Registration

Please complete the following forms to register your business in our supplier database. Our Supplier Outreach Team uses this database and the profiles in it to identify suppliers for business opportunities.

Forms can be e-mailed to, faxed to (408) 392-9797, or mailed to California Water Service, Attn: Procurement Department, 1720 North First Street, San Jose, CA 95112-4508.

By submitting the Vendor Information and W-9 forms, you hereby accept Cal Water’s Terms & Conditions for doing business with us.

Please ensure that information on your company’s capabilities is accurate, thorough, and up to date.