Rate Information

2025-27 General Rate Case


In August of 2023, Golden State Water Company (Golden State Water) filed its 2023 General Rate Case (GRC) with the California Public Utilities Commission. This rate plan proposes local infrastructure investments and water rates for the years 2025, 2026 and 2027. Any adjustments to current rates will not go into effect until January 2025, at the earliest.

The proposed rates continue to support our long-term commitment to providing our customers with high-quality water and reliable service by proactively investing in their community’s water supply and distribution systems. We never want customers to think twice about the quality of the water coming from their taps.

How Rates Are Determined

As a state-regulated utility, Golden State Water is required to submit a GRC application every three years, as set forth by the California Public Utilities Commission (CPUC). A GRC is an 18-month process that coincides with the expiration of current rates on Dec. 31, 2024.

The rates proposed for 2025-27 will provide customers long-term value through:

  • Technology that controls operational costs and improves customer service.  
  • Upgrading water treatment facilities essential to providing safe and reliable water service. 
  • Replacing aging water mains, fire hydrants and other infrastructure essential to conservation and the efficient delivery of water. 
  • Increasing water supply and storage through groundwater treatment, new wells, and the maintenance and construction of new reservoirs. 
  • Back-up power generation that sustains water treatment and delivery in times of power failure and natural disasters. 

The CPUC requires Golden State Water to ensure reasonable rates that reflect the total cost of providing water service, maintaining the infrastructure, and making needed system improvements. Many factors impact water rates, including rising operation and maintenance costs, regulatory requirements, and capital improvement programs. There are other factors beyond Golden State Water’s control, including, but not limited to, regulatory costs and taxes, rising energy costs, and increasing construction costs to replace aging infrastructure.

Public Participation

The CPUC’s rate-making process is structured to be open and transparent, inviting customers to offer public comments. The CPUC’s Public Advocates Office works with the CPUC and customers to ensure the lowest possible rates without compromising public health and safety.

A notice of the proposed rates has been published in local newspapers and a customer notice will be sent to inform customers of the proposed Application filing.

Additional Resources

Coming Soon

California Public Utilities Commission

2023 GRC Application

Notice of Availability

20-Day Newspaper Notices

Arden Cordova 20-Day Notice

Bay Point 20-Day Notice

Clearlake 20-Day Notice

Los Osos 20-Day Notice

Santa Maria 20-Day Notice

Simi Valley 20-Day Notice

Region 2 20-Day Notice

Region 3 20-Day Notice

​45-Day GRC Notices

Arden Cordova 45-Day Notice

Bay Point 45-Day Notice

Clearlake 45-Day Notice

Los Osos 45-Day Notice

Santa Maria 45 - Day Notice

Simi Valley 45- Day Notice

Region 2 45-Day Notice

Region 3 45-Day Notice

Golden State Water Company’s customer service representatives are standing by to assist you with any questions. For 24-hour emergency and customer service, please call 909-394-2272 or Toll-Free: 1-800-999-4033