Capital Projects

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photograph of Pomello Plant project sitephotograph of Pomello Plant project site

2026 General Rate Case (2028-30)

The rates proposed for 2028-2030 will provide customers in the Claremont Service Area with long-term value by investing over $37 million in local water infrastructure essential to delivering safe, high-quality, and reliable drinking water. 

Proposed investments include replacing two groundwater wells that have exceeded their useful service lives, upgrading the 1.5-million-gallon Del Monte Reservoir and 1.5-million-gallon Pomello Reservoir, installing tank mixers at five reservoirs to improve water quality, and replacing critical pressure-reducing valves and treatment infrastructure throughout the system. These projects, combined with ongoing pipeline replacements throughout the service area, will improve water quality, strengthen local groundwater reliability, and extend the life of critical water infrastructure. Together with the company’s ongoing investments in water treatment technology and fire hydrants that support public safety, new investments will help maintain safe drinking water standards and reliable service for the community. 

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: 

Current & Upcoming Projects

248 E. 11 Street – Pipeline Installation

Location: 248 E. 11th Street, Claremont , CA 91711

Project Timeline:  July 2026 – August 2026

Working Hours:
7:00 a.m. – 5:00 p.m. Monday – Friday (No weekends or holidays)

Construction crews will work to:

  • Install new pipelines for the 10th Street-Building and Dance Addition.

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.

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

outline of the Pomello Plant Project

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.

outline of Part 1 of Yale Avenue Project

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.

outline of Part 2 of Yale Avenue Project

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

outline of Foothill Boulevard Project

Working Hours:
7 a.m. – 5 p.m.

Construction crews worked to:

  • Upgrade a fire hydrant
  • Install new service line

View the construction notice.