On June 2, 2025, Cal Water filed an Application with the California Public Utilities Commission (“CPUC”) related to per- and polyfluoroalkyl substances (PFAS).
The application and associated public attachments are linked to at right or may be obtained by contacting [email protected] or (408) 367-8239.

Advice Letters
Cal Water submits advice letters to the California Public Utilities Commission (CPUC) for approval or authorization. These letters, categorized as “Effective” or “Not Currently Effective,”.
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Infrastructure Improvement Plans
This page is designed to share helpful information on our 2024 Infrastructure Improvement Plan to continue provide safe and clean drinking water.
Discover Infrastructure Improvement Plans