Important Drought Notice: California is in a drought emergency, and the State Water Resources Control Board has instructed Golden State Water’s Claremont, Montclair, Pomona and Upland customers to reduce water use by 32% compared to 2013.

CSA Drought Image
* Total reductions for period from June 1, 2015-Jan. 31, 2016 (compared to 2013 usage)
Currently meeting reduction goal

In order to achieve the mandatory reductions established by the State Water Resources Control Board, the following Staged Mandatory Water Conservation and Rationing plan has been filed for the local water system.

Current Stage: Stage 1, effective July 1

Stage 1: Outdoor irrigation limited to two days per week, before 9 am or after 5 pm; even addresses on Monday and Thursday, odd addresses on Tuesday and Friday
Stage 2: Irrigation restrictions from Stage 1; $2.50 emergency surcharge per CcF over allocation
Stage 3: Irrigation restrictions from Stage 1; $5 emergency surcharge per CcF over allocation
Stage 4: Irrigation restrictions from Stage 1; $10 emergency surcharge per CcF over allocation

To learn more, please click here to visit the Drought Page of our website.

Golden State Water has proudly served the community of Claremont for more than 80 years. First constructed in the early 1900s, Claremont has a mature water system. Golden State Water has remained committed to quality, investing in the system so that it can reliably serve the approximately 11,000 customers in Claremont, and portions of Montclair, Pomona, and Upland. With 11 local employees serving customers 24/7, Golden State Water is committed to Claremont.

Office Location
Claremont CSA
915 W Foothill Blvd, Suite E
Claremont, CA 91711
Average Monthly Residential Water Usage in Claremont
  • Average monthly usage for residential customers in Claremont is 21 Ccf, the equivalent of 2,100 cubic feet or 15,708 gallons. This is driven primarily by larger homes and more outdoor water use.
  • The City’s water comes from two sources.  Sixty (60) percent comes from local groundwater supplies, which Golden State Water maintains. The balance is imported from the Metropolitan Water District of Southern California (MWD) via Three Valleys Municipal Water District.  Imported water is more expensive than local groundwater as MWD rates have increased by almost 100 percent since 2006.
  • Golden State Water imports 36 percent of Claremont’s water to meet demand.

Urban Water Management Plan (UWMP)

UWMPs are prepared to ensure adequate water supplies are available to meet existing and future water demands. Every five years, Golden State Water and all water systems that supply more than 3,000 acre-feet of water per year or serve more than 3,000 connections are required to update their UWMPs. See Golden State Water’s 2010 Claremont UWMP.
Claremont hot spot water usageClaremont water usage graphic


  • We’ve invested more than $20 million since 2000 to improve capacity, replace aging pipes and mains and to strengthen water quality and reliability.
  • Golden State Water plans to invest more than $4.1 million dollars in local infrastructure improvements in 2014.
  • Learn More.
  • “Experts at the U.S. Environmental Protection Agency say cities older than 50 years, like most in the San Gabriel Valley, are entering the Era of Replacement as water systems deteriorate, said Sanjay Gaur, senior manager of Raftelis, a Pasadena-based financial consulting firm Gaur said. “The cost for new pipes, pumps and reservoirs will hit ratepayers’ wallets hard.”  Golden State Water has been ahead of the curve, proactively investing to upgrade and improve the Claremont system.

Local News & Updates

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Flood Preparedness Information & Tips
flood preparedness image

Golden State Water would like to remind customers that heavy rainfall from El Niño conditions could cause major flooding in areas throughout California.

Click here for more information and preparedness tips.

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.

Read more.

Golden State Water Launches Golden Lawn Contest

Golden State Water and Save Our Water are teaming up to host a “Golden Lawn Contest” to further promote outdoor conservation by highlighting customers who have limited or stopped irrigating their lawns during the month of September.

Click here to enter and for contest guidelines!