Golden State Water provides reliable, high-quality drinking water to approximately 11,000 customers in the Claremont Customer Service Area (CSA), which includes Claremont and portions of Montclair, Pomona and Upland. Our local team includes 11 dedicated employees who take pride in serving Claremont customers 24/7.

Local water comes from two sources:  60 percent comes from local groundwater supplies, which Golden State Water maintains, and the balance is imported from the Metropolitan Water District of Southern California (MWD) via Three Valleys Municipal Water District.

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.

  • Effective April 20, 2017, an average residential customer in the Claremont Customer Service Area with a 1” meter, using 11,220 gallons (1,500 cubic feet or 15 Ccf) of water per month, would see a monthly bill increase of $4.94 from $89.58 to $94.52 compared to 2016 (excluding any applicable surcharges).
  • Effective July 1, 2018, local water rates will decrease by 3.21% to pass cost savings from the new lower federal corporate income tax requirement through to customers. Click here to learn more.
  • Golden State Water’s rates for 2016, 2017 and 2018 were approved by the CPUC in March 2017. The GRC approval was originally expected prior to Jan. 1, 2016, and the delayed approval prevented Golden State Water from implementing the new rates for 2016 on schedule (2015 rates remained in place during the delay period). For additional information on local water rates, please click here. To review frequently asked questions about water rates, read our fact sheet. English | Spanish
  • For additional information on proposed water rates for the years 2019, 2020 and 2021, please click here.

More than $7.1 million in infrastructure improvements are planned for 2018 in the Claremont service area.

The 2018 investments include water supply enhancements, distribution and ongoing improvements designed to replace old meters, mains and safety equipment. Click here to learn more and access a list of projects planned for 2018.

To view current and completed projects in your area, click here.

Urban Water Management Plan (UWMP)
Every five years, UWMPs are prepared for systems that supply more than 3,000 acre-feet of water per year or serve more than 3,000 connections. UWMPs are prepared to support long-term planning goals and ensure that adequate water supplies are available to meet existing and future water demands.

Please click here to learn more or view the UWMP for your area.

On April 7, 2017, Governor Jerry Brown issued an executive order lifting the drought emergency for most of the state, while asking Californians to continue using water responsibly and make conservation a way of life.

Local water-use and outdoor irrigation restrictions implemented during the drought emergency have been lifted.

Local News & Updates

Golden State Water is Offering Free Rain Barrels

Are you interested in a free rain barrel? Join Golden State Water at Rancho Santa Ana Botanic Garden for our rain barrel distribution event! Saturday, October 28, 2017. Begins at 8 a.m.Are you interested in a free rain barrel? Join Golden State Water at Rancho Santa Ana Botanic Garden for our rain barrel distribution event!

Click here for more information.

City of Claremont and Golden State Water Agree to End Legal Conflict
The City of Claremont and Golden State Water have agreed to end the eminent domain legal conflict.

The City of Claremont and Golden State Water have agreed to end the eminent domain legal conflict.

Click here for more information.

General Rate Case Update: Claremont
 On July 19, 2017, Golden State Water filed its General Rate Case application, proposing rates and infrastructure investments for 2019-21.

On July 19, 2017, Golden State Water filed its General Rate Case application, proposing rates and infrastructure investments for 2019-21.

Click here to learn more.

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