Claremont
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 |
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.
2023 GRC (2025-27 Rates)
In January of 2025, the California Public Utilities Commission (CPUC) adopted a General Rate Case for Golden State Water Company (Golden State Water) that includes local infrastructure investments and new water rates for 2025, 2026, and 2027. The new rates went into effect February 1, 2025.
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.
- The average residential customer with a 1” meter using 11,968 gallons (1,600 cubic feet or 16 Ccf) per month will see their 2024 monthly bill increase from $136.76 to $158.85, effective Feb. 1, 2025 (excluding any applicable surcharges).
- The average commercial customer with a 2” meter using 80,036 gallons (10,700 cubic feet or 107 Ccf) per month will see their 2024 monthly bill increase from $819.83 to $939.15, effective Feb. 1, 2025 (excluding any applicable surcharges).
Rates/Infrastructure Investments
- 2025-27 Infrastructure Investments/Water Rates Fact Sheet - Claremont
- About Golden State Water Company
Tariff Sheets
- Rates - Residential
- Rates - Non-Residential
- Rates - Measured Irrigation Service
- Rates - Limited Metered Service
- Understanding Your Tariff Sheet
- Review All Rates, Tariffs and Advice Letters
Financial Assistance
Maps
Capital Projects
GRC 2023 General Case (2025-27)
The rates adopted for 2025-2027 will provide customers with long-term value by investing over $23.5 million in needed capital investments and maintenance of local water infrastructure essential to the reliable production, treatment, and delivery of quality water.
Investments in the Claremont Service Area include but are not limited to, water distribution projects, booster station improvements, plant treatment facilities improvements, new wells, systemwide technology that monitors and controls the water system, and the replacement of aging water mains. As part of our commitment to reliability and public safety, Golden State Water proactively invests in upgrading and maintaining its fire hydrants.
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: 2023 GRC Infrastructure Investments - Claremont
Current & Upcoming Projects
Montana Lane – New Well and Plant Site
Location: Southeast corner of Montana Lane & Padua Ave, Claremont, CA 91711
Project Timeline: May 2025 – December 2025
Working Hours:
8:00 a.m. – 5:00 p.m. Monday – Friday (No weekends or holidays)
Construction crews will work to:
- Install a new well and water plant.
Golden State Water is implementing measures to control dust and install sound walls to help reduce construction noise. During the construction period, there will be intermittent 24-hour work over a span of 2–3 months. This means that some night work will occur, but it will not happen every night, and the schedule may vary without a set pattern.
This project will improve the distribution system and ensure Golden State Water can continue providing reliable water service to local customers.
View the Construction Notice.
Recently Completed Projects
Pomello Plant
928 E. Pomello Drive
Investment:
$1.9 million
Project Timeline:
(delayed due to COVID-19) October 14, 2019 – May 2021
Working Hours:
7 a.m. – 5 p.m.
Construction crews will work to construct a new groundwater well.
This project will provide a new groundwater source for the local water system and ensure Golden State Water can continue providing reliable water service to local customers.
Click here to learn more.
View the construction notice to learn more.
Claremont
Yale Ave.
Investment:
$1,061,648
Construction crews worked to:
- Replace approximately 3,600 ft. of aged water pipe
- Install new service lines
- Install fire hydrants
Part 1: 1st St. to Harrison Ave.
Project Timeline:
June 6, 2017 – mid-July 2017
View the construction notice.
Part 2: Harrison Ave. to 7th St.
Project Timeline:
Mid-July 2017 – August 25, 2017
View the construction notice.
Claremont
Foothill Blvd. between Towne Ave. and Mountain Ave.
Project Timeline:
March 28, 2017 – end of April 2017
Working Hours:
7 a.m. – 5 p.m.
Construction crews worked to:
- Upgrade a fire hydrant
- Install new service line
View the construction notice.