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

CPUC Issues Proposed Decision for 2016-18 General Rate Case

On Dec. 21, the California Public Utilities Commission issued its Proposed Decision for the 2016-18 General Rate Case.

Click here to learn more and read the full decision.

Superior Court Issues Final Decision On Claremont’s Eminent Domain Case

Untitled1On Dec. 14, Golden State Water Company issued a statement in response to the Superior Court of the State of California’s final decision rejecting the City of Claremont’s eminent domain case.

Click here to read the statement.
Click here to read the Court’s final decision.

Golden State Water Donates Turkeys to Foothill District Non-Profits

Golden State Water was pleased to partner with local elected officials and community leaders to distribute turkeys in the Foothill District through Operation Gobble.

Click here to read more or to watch the video about Operation Gobble, click here.

Golden State Water Launches #H2OMakeover Contest
H2O Makeover

During the month of August, Golden State Water hosted a #H2OMakeover contest to reward one customer with a free indoor conservation makeover provided by Golden State Water’s Water-Use Efficiency Department.

Click here to learn more.