Capital Projects
2023 General Rate Case (2025-27)
The rates adopted for 2025-2027 will provide customers with long-term value by investing over $31.5 million in needed capital investments and maintenance of local water infrastructure essential to the reliable production, treatment, and delivery of quality water.
Investments in the San Dimas Service Area include but are not limited to, water distribution projects, improvements to treatment facilities, plant site upgrades, improvements to a booster station, systemwide technology that monitors and controls the water system, the replacement of aging water mains and reservoirs. As part of our commitment to reliability and public safety, Golden State Water proactively invests in upgrading and maintaining its fire hydrants.
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: 2023 GRC Infrastructure Investments - San Dimas.
Current & Upcoming Projects
300 North Walnut Avenue – Construction of Water Mains, Hydrants and Domestic Services
Location:
300 North Walnut Avenue – Tract 73584, San Dimas, CA 91773
Project Timeline:
May 2026 – August 2026
Working Hours:
Monday – Friday (No work on weekends or holidays)
7:30 a.m. – 4:30 p.m.
Construction crews will work to:
Construct the 620 LF of 8” and 10” PVC Watermains, 12-1”
Domestic Services, 3-6” Fire Hydrants and Abandonment of 1-1”
Domestic Service and 1-6” Fire Hydrant.
This project will ensure Golden State Water can continue providing reliable water service to local customers.
View the Construction Notice here.
La Verne – De Anza Heights Road Pump Station Project
Location:
790 ½ De Anza Heights Road-Pump Station-Tract 53984, La
Verne, CA 91750
Project Timeline:
May 2026 – February 2027
Working Hours:
Monday – Friday (No work on weekends or holidays)
7:00 a.m. – 5:00 p.m.
Construction crews will work to:
Construct a booster station with four pumps, CMU walls, phase electrical service, suction and discharge piping.
This project will ensure Golden State Water can continue providing reliable water service to local customers.
View the Construction Notice here.
Wayhill Plant – East and West Reservoir Replacement
Location:
Wayhill Plant – 506 Gladstone Ave., San Dimas, 91773
Project Timeline:
June 2025 – August 2026
Working Hours:
Monday – Friday (No work on weekends or holidays)
7:00 a.m. – 4:00 p.m.
Construction crews will work to:
Replace both the east and west reservoirs of the Wayhill Plant.
This project will ensure Golden State Water can continue providing reliable water service to local customers.
View the Construction Notice here.
Recently Completed Projects
Baseline Well No. 5
636 East Baseline Road, in the City of San Dimas
Investment:
$1,000,000
Project Timeline:
October 5, 2020 – January 2021
Working Hours:
Monday – Friday 8 a.m. – 5 p.m.
Construction crews will work to:
- Destroy the existing water well at Golden State Water Company’s Baseline Plant
- Drill and develop new water well
View the Construction notice.
Covina
800 N. Banna Ave. surrounded by Cypress St., Banna Ave., Kidder
Ave., and Colver Pl.
Project Timeline:
January 9, 2017 – TBD
Working Hours:
7 a.m. – 4 p.m.
Construction crews will work to:
- Install new water pipes
- Install new service lines
- Install fire hydrants
Covina
Calora St. and Kinsella
Project Timeline:
May 15, 2017 – August 21, 2017
Construction crews worked to:
- Replace aged water pipe
- Install new service lines
- Install fire hydrants
View the construction notice.