What is Advice Letter 2579 and where can I read it?

Advice Letter 2579 is Cal Water's filing seeking the revenue increase; it will be posted at https://www.calwater.com/rates-advice-letters/ (select Oroville District).

How much would my water bill increase if approved?

A typical Oroville-area residential customer using 6 CCF would see about a $0.48 monthly increase, roughly 1%.

How do I file a protest or comment with the CPUC?

Email water.division@cpuc.ca.gov or mail the Tariff Unit, Water Division, CPUC, 505 Van Ness Ave, San Francisco; also send to cwsrates@calwater.com or mail Cal Water's Rates Department.

What is the deadline to protest the filing?

Written responses or protests must be received by the CPUC's Water Division by May 24, 2026.

May 8, 2026 Public Hearing: 1720 North First Street, San Jose, CA

NOTICE OF PROPOSED RATE CHANGE BEFORE THE CALIFORNIA PUBLIC UTILITIES COMMISSION (CPUC) On or around May 4, 2026, Cal Water will file Advice Letter 2579 requesting authority to increase revenues to recover recently completed and previously authorized infrastructure improvements. In the advice letter, Cal Water requests additional revenue of $587,600, or 1.4% of currently authorized revenue. If approved, effective July 1, 2026, the water bill of a North Valley Region Oroville area residential customer with 6 CCF (which is 600 cubic feet, or approximately 4,488 gallons) of monthly water usage would increase by approximately $0.48, or 1%. Although previously authorized by the CPUC in Decisions 26-04-045, 24-03-042 and 20-12-007 as part of the utility's triennial rate review process, the project's cost could only be recovered through a rate increase after it was completed. A copy of Advice Letter 2579 will be available on the internet at https://www.calwater.com/rates-advice-letters/ (please select the Oroville District from the drop-down menu), and may also be obtained from the company's local offices by calling (530) 533-4034. You may also contact the company's headquarters by mailing the Rates Department at 1720 North First Street, San Jose, California 95112-4598, or by calling (408) 367-8200 and asking for the Rates Department. Cal Water offers many programs to help you manage your water bill including a customer assistance program (CAP, formerly the low-income ratepayer assistance program or LIRA), water conserving appliance rebates, and other conservation programs. Please visit our website at www.calwater.com to take advantage of these opportunities. Protests and Responses. Anyone may respond to or protest this filing. A response supports the filing and may contain information that proves useful to the Commission in its evaluation. A protest objects to the filing in whole or in part and must set forth the specific grounds on which it is based, and shall provide citations or proof where available to allow Commission staff to properly consider the protest. The grounds for protests are: 1. The utility did not properly serve or give notice of the filing. 2. The relief requested in the filing would violate statute or Commission order, or is not authorized by statute or Commission order on which the utility relies. 3. The analysis, calculations, or data in the filing contains material error or omissions. 4. The relief requested in the filing is pending before the Commission in a formal proceeding, or 5. The relief requested in the filing requires consideration in a formal hearing, or is otherwise inappropriate for the filing process, or 6. The relief requested in the filing is unjust, unreasonable, or discriminatory (provided that such a protest may not be made where it would require relitigating a prior order of the Commission). A response or protest must be made in writing and received by the Commission's Water Division by May 24, 2026, the end of the comment period. The response or protest should be sent to the CPUC (by email to water.division@cpuc.ca.gov, or by mail to the Tariff Unit, Water Division, 3rd Floor, CPUC, 505 Van Ness Avenue, San Francisco, CA 94102) and to Cal Water (by email to cwsrates@calwater.com, or by mail to the Rates Department, California Water Service Company, 1720 N. 1st Street, San Jose, CA 95112. CALIFORNIA WATER SERVICE COMPANY 5/8/26 CNS-4040258# MERCURY-REGISTER

Public Hearing — 1720 North First Street, San Jose, CA

What to do next

Frequently asked questions

Legal terms in this notice

Related Notices

Cal Water will file Advice Letter 2579 seeking a $409,698 (0.5%) revenue increase to recover completed infrastructure costs, which would raise a typical Bear Gulch residential bill by about $0.54 monthly if approved effective July 1, 2026. Comments or protests are due May 24, 2026.

Cal Water will file Advice Letter 2579 seeking a $69,424 (0.9%) revenue increase to recover completed infrastructure costs, which would raise a typical Selma District residential bill by about $0.48 monthly if approved effective July 1, 2026. Public comments or protests are due May 24, 2026.

Cal Water will file Advice Letter 2579 to increase revenues by $1,515,949 (2.5%) to recover completed infrastructure costs, which would raise a typical Los Altos residential bill by about $2.38 monthly if approved effective July 1, 2026. Public comments or protests are due May 24, 2026.

Cal Water will file Advice Letter 2579 (around May 4, 2026) seeking a 0.5% revenue increase to recover completed infrastructure costs, which would raise a Westlake District residential bill by about $0.57 monthly if approved effective July 1, 2026. Public protests or responses are due May 24, 2026.

Cal Water will file Advice Letter 2579 on or around May 4, 2026 asking the CPUC to allow a $623,670 (0.9%) revenue increase to recover completed infrastructure costs, which would raise a Stockton District residential bill by about $0.47 monthly starting July 1, 2026.

Cal Water will file Advice Letter 2579 requesting a $998,615 (0.8%) revenue increase to recover completed infrastructure costs, proposing a July 1, 2026 rate change that would raise a typical Bay Area residential bill by about $0.47 monthly. Comments or protests are due May 24, 2026.

Cal Water will seek CPUC permission to raise Visalia District water revenues by $1,185,168 (2.8%), which would raise a typical 11 CCF residential bill by about $0.90 monthly if approved effective July 1, 2026. Public comments or protests are due May 24, 2026.

Cal Water will seek CPUC approval to raise revenues by $408,748 (0.8%) to recover completed infrastructure costs, likely increasing a typical Salinas residential bill by about $0.41 per month effective July 1, 2026. Public comments or protests are due May 24, 2026.

Cal Water (Marysville District) will file Advice Letter 2579 seeking a $93,075 (1.8%) revenue increase to recover completed infrastructure costs, which would raise a typical residential bill by about $0.83 monthly if approved effective July 1, 2026. Comments or protests are due May 24, 2026.

See also

Other auctions near San Jose→

This property's history