Clearlake

Clearlake

Overview

Golden State Water serves over 2,100 customers in the Clearlake Customer Service Area. As a member of the Clearlake community for more than 35 years, Golden State Water and its employees enjoy participating in annual events and take pride in being an active member of the community.

On July 13, 2023, the CPUC approved the company’s request to acquire Crescent Bay Improvement Company (aka Crescent Bay Water System or Crescent Bay), now called South Shore. 

Water delivered to customers in the Clearlake system is surface water from Clear Lake and local groundwater, both of which are treated at Golden State Water Company’s Sonoma Water Treatment Plant. 

Water delivered to customers in the South Shore system is surface water from Clear Lake, which is treated at Golden State Water Company’s Crescent Bay Water Treatment Plant.  GSWC is working as quickly as possible to bring the South Shore system into full compliance with all federal and state water quality standards.  GSWC is seeking grant funding to install new water mains, services, and meters, and to provide a new source of clean drinking water. GSWC provides bottled water for drinking purposes to South Shore customers. 

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Capital Projects

GRC 2026 General Case (2028-30)

The rates proposed for 2028-2030 will provide customers in the Clearlake Service Area with long-term value by investing over $6.5 million in local water infrastructure essential to delivering safe, high-quality, and reliable drinking water. 

Proposed investments include replacing the aging Oakcrest Booster Pump Station with a new fire-hardened facility and replacing filter media in a critical treatment filter at the Sonoma Water Treatment Plant. These projects, combined with ongoing pipeline replacements throughout the service area, will improve water quality, strengthen system reliability, help protect local groundwater resources, and extend the life of critical water infrastructure. Together with the company’s ongoing investments in water treatment technology and fire hydrants that support public safety, new investments will help maintain safe drinking water standards and reliable service for the community.

For frequently asked questions about the rate-making process, click here.

Learn about the infrastructure investments in the water system serving your community’s homes and businesses: Clearlake Proposed 2028-30 GRC.

Current & Upcoming Projects

Recently Completed Projects

Sonoma & Lakeshore VFDs

Investment:
$460,000

Project Timeline:
June 24, 2019 – Feb. 5, 2020

Working Hours:
Monday – Friday (No weekends or holidays)
7 a.m. – 5 p.m.

Construction crews will work to install six Variable Frequency Drives (VFD).

This project will optimize the water treatment process and ensure Golden State Water can continue providing quality water service to local customers.

Napa Street Pipeline

Investment:
$320,000

Project Timeline:
Dec. 20, 2019 – Feb. 3, 2020

Working Hours:
Monday – Friday (No weekends or holidays)
7 a.m. – 5 p.m.

Construction crews worked to:

  • Install 800 LF of pipeline
  • Install 1 fire hydrant
  • Install 9 services

This project will improve the distribution system and ensure Golden State Water can continue providing reliable water service to local customers.

outline of Lower Lakeshore Pipeline Project

Lower Lakeshore Pipeline
The following streets will be affected: parts of Lower Lakeshore Dr., Lakeshore Dr. and Colusa St.

Investment:
$585,000

Project Timeline:
November 2018 – February 2019

Working Hours:
Monday – Friday (No weekends or holidays)
8 a.m. – 5 p.m.

Construction crews will work to:

  • Install 2,000 LF of pipeline
  • Install 3 fire hydrants
  • Install 34 services

This project will improve the distribution system and ensure Golden State Water can continue providing reliable water service to local customers.
 

outline of Crandall & Hill Pipeline Project

Crandall & Hill Pipeline
The following streets will be affected: parts of Crandall Ave. and Hillcrest Ave.

Investment:
$600,000

Project Timeline:
December 2018 – March 2019

Working Hours:
Monday – Friday (No weekends or holidays)
8 a.m. – 5 p.m.

Construction crews worked to:

  • Install 1,000 LF of pipeline
  • Install 2 fire hydrants
  • Install 39 services

This project will improve the distribution system and ensure Golden State Water can continue providing reliable water service to local customers.
 

Lakeshore Plant

Investment:
$115,000

Working Hours:
Monday – Friday (No weekends or holidays)
8 a.m. – 5 p.m.

Construction crews worked to install an emergency generator.

This project will ensure Golden State Water can continue providing reliable water service to local customers during a power outage.

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Rates

As a regulated utility, Golden State Water’s rates are determined by the California Public Utilities Commission (CPUC) through a General Rate Case (GRC) to ensure customers receive a fair rate for reliable, quality water service. New rates allow for investments to avoid the costly and sometimes dangerous effects of deferring maintenance or delaying the replacement of aging infrastructure.

2026 General Rate Case (2028-30 Rates)

In July 2026, Golden State Water Company (Golden State Water) will file its 2026 General Rate Case (GRC) application with the California Public Utilities Commission (CPUC). The application proposes water rates and infrastructure investments for 2028, 2029 and 2030.

These rates reflect Golden State Water’s long-term commitment to providing 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. 

To learn how your rates are invested in your community, visit the Capital Projects tab, and for frequently asked questions about the rate-making process, click here. 

Consolidated Service Area

The following bill impact summaries include rates for the Clearlake Customer Service Area after the California Public Utilities Commission (CPUC) approved consolidating the water system into a larger rate-making area that includes Arden, Cordova and Robbins. 

  • The average residential customer in the Clearlake Customer Service Area with a 5/8 x 3/4” meter using 2,992 gallons (4 Ccf) per month would see their current monthly bill increase from $101.31 to $104.65 in 2028, at the earliest (excluding any applicable surcharges). 
  • The average commercial customer in the Clearlake Customer Service Area with a 5/8 x 3/4″ meter using 10,472 gallons (14 Ccf) per month would see their current monthly bill increase from $211.78 to $218.76 in 2028, at the earliest (excluding any applicable surcharges).

Rates/Infrastructure Investments

Tariff Sheets

Financial Assistance​

Maps

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Conservation

Following several years of heavy precipitation and snow in California, conditions have dramatically changed for many parts of the State. In response, the state has rolled back drought emergency provisions that are no longer needed while maintaining other measures supporting regions and communities facing water supply challenges. 

Effective Sunday, May 14, 2023, Golden State Water Company modified outdoor watering restrictions to allow watering up to three days per week. Given that water conditions will continue to evolve, customers are encouraged to use water wisely and only use what is needed. 

Golden State Water is recommending customers limit outdoor irrigation between the hours of 7 PM and 8 AM per the following schedule: 

Addresses Ending In: Watering Days:
Even Numbers (0, 2, 4, 6, 8) Sunday, Wednesday, Friday
Odd Numbers (1, 3, 5, 7, 9) Tuesday, Thursday, Saturday