Capital Projects
2026 General Rate Case (2028-30)
The rates proposed for 2028-2030 will provide customers in the San Gabriel Service Area with long-term value by investing nearly $21 million in local water infrastructure essential to delivering safe, high-quality, and reliable drinking water.
Proposed investments include upgrading water treatment and electrical infrastructure at the San Gabriel Plant, which operates two groundwater wells with a combined capacity of 1,300 gallons per minute and a treatment system for PFAS and VOC removal, improving security and drainage at the Encinita Plant, and recoating the 0.50-million-gallon Teresa Reservoir. These projects, combined with ongoing pipeline replacements throughout the service area, will improve water quality, strengthen system 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
South Arcadia System – Drought Tolerant Landscaping
Location: 4944 N. Persimmon Ave., Temple City, CA 91780
Project Timeline: February 2026 – March 2026
Working Hours: Monday – Friday (No weekends or holidays) 7:00 a.m. – 5:00 p.m. However, there will be times during the construction period when around-the-clock (24 hours a day, 7 days a week) operations will be necessary.
Construction crews will work to:
- Replace ornamental grass with artificial turf.
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
Saxon Plant – Well Replacement, Reservoir and Booster Station
Location: 409 E Saxon Ave, San Gabriel, CA, 91776
Project Timeline: June 21, 2023 – Mid-November 2023
Working Hours: Monday – Friday (No weekends or holidays) 7:00 a.m. – 5:00 p.m. However, there will be times during the construction period when around-the-clock (24 hours a day, 7 days a week) operations will be necessary.
Construction crews will work to:
- Demolish existing building. Construct a 0.75 MG reservoir.
- Drill and equip a replacement well for Saxon Well #3, consolidate chlorine buildings and replace drain line due to leaks.
- Construct a new booster station at the Saxon Plant inside a building, replace the MCC and PLC and increase service from Southern California Edison.
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.
South Arcadia Main Replacement
Lynrose St., between Florinda Ave. and Tyler Ave.; Daneswood
Dr., between Florinda Ave. and Tyler Ave.; and Alley south
of Live Oak Ave., Tyler Ave. to the Savers parking lot
Investment:
$970,000
Project Timeline:
September 17, 2018 – January 2019
Working Hours:
Monday – Friday (No weekends or holidays)
7 a.m. – 5 p.m.
Construction crews worked to:
- Install 400 LF of pipeline
- Install 4 fire hydrants
- Install 112 service lines
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.
Graves Main Replacement
Graves Ave. from Del Mar Ave. to Eckhart Ave.
Investment:
$490,000
Project Timeline:
September 24, 2018 – November 2018
Working Hours:
7 a.m. – 4 p.m.
Construction crews worked to:
- Install 1,200 LF of pipeline
- Install one fire hydrant
- Install 49 services
This project improves the distribution system and ensures Golden State Water can continue providing reliable water service to local customers.
View the construction notice.
Rosemead
Garvey Ave. and Delta Ave.
Project Timeline:
June 26, 2017 – September 28, 2017
Construction crews worked to:
- Install water pipe extension
- Install new service lines to the business
- Install fire service to the business
View the construction notice.
Monterey Park and Rosemead
New Ave. between Whitmore St. and Hellman Ave.
Project Timeline:
June 26, 2017 – September 20, 2017
Construction crews worked to:
- Replace aged water pipe
- Install new service lines
- Install fire hydrants
View the construction notice.
Irwindale
Longden Ave. between Peck Rd. and Live Oak Ave.
Project Timeline:
April 17, 2017 – June 30, 2017
Construction crews worked to:
- Replace aged water pipe
- Install new service lines
- Install fire hydrants
View the construction notice.
Rosemead
Gladys Ave. and Charlotte Ave. north of Graves Ave.
Project Timeline:
March 13, 2017 – June 23, 2017
Construction crews worked to:
- Replace aged water pipe
- Install new service lines
- Install fire hydrants
View the construction notice.
Temple City and El Monte
Halifax Rd., Doreen Ave., Key West Ave., Arden Dr., Miloann St.,
Hallowell St., Freer St. and Lower Azusa Rd.
Project Timeline:
October 17, 2016 – June 5, 2017
Construction crews worked to:
- Replace aged water pipe
- Install new service lines
- Install fire hydrants
View the construction notice.
Rosemead
Isabel Ave. south of Emerson Pl.
Project Timeline:
January 3, 2017 – February 17, 2017
Construction crews worked to:
- Replace approximately 1,000 ft. of aged water pipe
- Install new service lines
- Install fire hydrants
View the construction notice.