Advice letters are informal requests to the California Public Utilities Commission (CPUC) seeking approval or authorization. Below you can find proposed advice letters submitted to the CPUC. Select your district to see a list of documents related to your district (or visit the Find My District page if you don’t know what district you are in).
CPUC Advice Letters: Access and Status
Advice letters are also available on the CPUC’s web site in their Index of Advice Letters.
Approval & Effectiveness Status
Effective - the CPUC has either authorized the filing or it is categorized as a filing that can be implemented in billing while the CPUC reviews (pending).
Not Currently Effective - it may be in the process of being reviewed by the CPUC (pending), not authorized by the CPUC (rejected), removed by the Company (withdrawn), or was previously approved by the CPUC, but has been since replaced by another advice letter.
Approved Advice Letters - the date shown in the file name is the effective date. If the advice letter is pending, rejected, or withdrawn, the date shown in the file name is the filing date.
- 2577 BAR Bimonthly EliminationApr 1, 2026
- 2576 - 2021 GRC COBA RefundApr 1, 2026
- 2575 CPUC User Fee 2026Jan 1, 2026
- 2574 Updates to Rule 15 Fees and TermsJul 1, 2026
- 2571 – 112026 Rate Base OffsetsJan 1, 2026
- 2570 – 112026 Production Expense OffsetsJan 1, 2026
- 2568 Jan 2026 Interim Rates and Memo AccountJan 1, 2026 - Active
- 2566 - 2024 ICBA AmortizationSep 3, 2025 - Active
- 2565 - 2024 M-WRAM AmortizationSep 3, 2025 - Active
- 2563 Amortization of Drought MemorandumSep 2, 2025
- 2556 Purchased Water Pump Tax OffsetsJul 1, 2025 - Active
- 2554 Rate Base OffsetsMay 16, 2025 - Active
- 2553 CAP Income Eligibility IncreaseJun 1, 2025
- 2543 CPUC Surcharge Decrease Update 2025Jan 1, 2025 - Active
- 2541 CAP Surcharge for 2025 slip sheetJan 1, 2025
- 2541 CAP Surcharge for 2025Jan 1, 2025
- 2540 Rate Suport Fund RSF Surcharge Update 2025Jan 1, 2025 - Active
- 2539 January 2025 RatesJan 1, 2025
- 2536 Rate Base Offsets 2021 GRCJan 1, 2025 - Active
- 2535 Purchased Water Pump Tax OffsetsJan 1, 2025 - Active
- 2533 - 2023 ICBA AmortizationOct 1, 2024 - Active
Rates and Tariffs
Water rates and tariffs for regulated systems are set by the California Public Utilities Commission (CPUC). The rates and tariffs listed in these documents are the most current adopted by the CPUC.
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Infrastructure Improvement Plans
This page is designed to share helpful information on our 2024 Infrastructure Improvement Plan to continue to provide safe and clean drinking water.
Discover Infrastructure Improvement Plans