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).
  • 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.

Proactive system maintenance has always been an emphasis for Golden State Water, and we continually invest to improve our water systems by upgrading both treatment and delivery systems in all service territories.

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

Customer Alert: Important Information For Wildfire Evacuations

Customers are reminded to turn off water and outdoor irrigation timers when evacuating homes and businesses during a wildfire emergency.

Click here to learn more.

Golden State Water Donates Turkeys to Foothill District Non-Profits Through Operation Gobble

During the Thanksgiving holiday season, Golden State Water worked in partnership with elected officials and community leaders to distribute more than 7,700 turkeys through the Operation Gobble program.

Click here to read more.

Customer Alert: Be Aware Of Utility Scams

Golden State Water encourages customers to be alert of utility scams.

Click here are some general tips to help you avoid becoming a victim.

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!

Click here for more information.