Simi Valley
Conservation
Following several years of heavy precipitation and snow in California, conditions have dramatically changed for many parts of the State. In response, the state has rolled back drought emergency provisions that are no longer needed while maintaining other measures supporting regions and communities facing water supply challenges.
Effective Sunday, May 14, 2023, Golden State Water Company modified outdoor watering restrictions to allow watering up to three days per week. Given that water conditions will continue to evolve, customers are encouraged to use water wisely and only use what is needed.
Golden State Water is recommending customers limit outdoor irrigation between the hours of 7 PM and 8 AM per the following schedule:
| Addresses Ending In: | Watering Days: |
|---|---|
| Even Numbers (0, 2, 4, 6, 8) | Sunday, Wednesday, Friday |
| Odd Numbers (1, 3, 5, 7, 9) | Tuesday, Thursday, Saturday |
Rates
As a regulated utility, every three years 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. New rates allow for investments to avoid the costly and sometimes dangerous effects of deferring maintenance or delaying the replacement of aging infrastructure.
2023 General Rate Case (2025-27 Rates)
In January of 2025, the California Public Utilities Commission (CPUC) adopted a General Rate Case for Golden State Water Company (Golden State Water) that includes local infrastructure investments and new water rates for 2025, 2026, and 2027. The new rates went into effect February 1, 2025.
These rates reflect Golden State Water’s long-term commitment to providing customers with high-quality water and reliable service by proactively investing in their community’s water supply and distribution systems. We never want customers to think twice about the quality of the water coming from their taps.
To learn how your rates are invested in your community, visit the Capital Projects tab, and for frequently asked questions about the rate-making process, click here.
- The average residential customer in the Simi Valley Customer Service Area with a 5/8 x 3/4” meter using 8,228 gallons (1,100 cubic feet or 11 Ccf) per month will see their 2024 monthly bill increase from $76.47 to $83.32, effective Feb. 1, 2025 (excluding any applicable surcharges).
- The average commercial customer in the Simi Valley Customer Service Area with a 2” meter using 36,652 gallons (4,900 cubic feet or 49 Ccf) per month will see their 2024 monthly bill increase from $428.74 to $526.03, effective Feb. 1, 2025 (excluding any applicable surcharges).
Rates/Infrastructure Investments
- 2025-27 Infrastructure Investments/Water Rates Fact Sheet - Simi Valley
- About Golden State Water Company
Tariff Sheets
- Rates - Residential
- Rates - Non-Residential
- Understanding Your Tariff Sheet
- Review All Rates, Tariffs and Advice Letters
Financial Assistance
Maps
Capital Projects
2023 General Rate Case (2025-27)
The rates adopted for 2025-2027 will provide customers with long-term value by investing over $13.4 million in needed capital investments and maintenance of local water infrastructure essential to the delivery and treatment of reliable, quality water.
Investments in the Simi Valley Service Area include but are not limited to water distribution infrastructure improvements, fire hardening equipment that protects above-ground water infrastructure and the replacement of aging water mains, meters, pumps and installing emergency power generators to reduce the dependence on the electrical grid during catastrophic events. 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 - Simi Valley.
Current & Upcoming Projects
Recently Completed Projects
Water Main Improvements
Location: Construction will occur on Sequoia Ave, Royal Ave, Shenandoah Ave, Acadia St, Olympic St, Blackstock Ave, Glacier St, Crater St, Barnes St, and Moreno Dr.
Project Timeline:
April 2024 – October 2024
Working Hours:
Monday – Friday (No weekends or holidays)
7:00 a.m. – 3:30 p.m.
Construction crews will work to:
-
Install new 8-in PVC Water Main and new service lines.
This project will ensure Golden State Water can continue providing reliable water service to local customers.
View the Construction Notice.
Sycamore Drive Pipeline Project
Investment: Over $1.5 million
Project Location: The intersection of E. Los Angeles Avenue and Sycamore Drive.
Project Timeline:
June 13, 2022 – July 29, 2022
Working Hours: June 13 – June 23
Monday – Sunday
10 p.m. – 6:00 a.m.
Working Hours: June 23 - July 29
Monday – Friday
10 p.m. – 6:00 a.m.
Construction crews will work to install a new pipeline.
The project will improve system hydraulics and increase water service reliability.
View the Construction Notice.
Sycamore Drive & Niles Discharge Pipe
Investment:
$500,000
Project Timeline:
July 29, 2019 – end of Sept. 27, 2019
Working Hours:
Monday – Friday
7 a.m. – 3:30 p.m.
Construction crews will work to install 1,020 LF of pipeline.
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.
Portable Generator
Systemwide
Investment:
$735,000
Project Timeline:
Sept. 30, 2019 – Nov. 13, 2019
Working Hours:
Monday – Friday, 7 a.m. – 4 p.m.
Construction crews will work to install emergency generators throughout the system.
This project will ensure Golden State Water can continue providing reliable water service to local customers during site-specific power outages.
View the Construction Notice.
Royal Ave. Bridge
Royal Avenue bridge at the Arroyo Simi channel crossing
Investment:
$361,000
Project Timeline:
September 21, 2018 – November 30, 2018
Working Hours:
Monday – Friday (No weekends or holidays)
7:00 a.m. – 4:00 p.m.
Construction crews worked to install 150 LF of 8″ main.
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.
Lautenschlager Plant
Simi Valley system
Investment:
$550,000
Project Timeline:
June 1, 2018 – December 1, 2018
Working Hours:
Monday – Friday (No weekends or holidays)
7:00 a.m. – 4:00 p.m.
Construction crews worked to recoat the Lautenschlager Plant steel tank.
This project will ensure Golden State Water can continue
providing reliable water service to local customers.
Niles Forebay
Simi Valley system
Investment:
$281,200
Project Timeline:
May 28, 2018 – December 11, 2018
Working Hours:
Monday – Friday (No weekends or holidays)
8 a.m. – 5 p.m.
Construction crews will work to replace the existing tank with a new 40,000 gallon tank.
This project will ensure Golden State Water can continue
providing reliable water service to local customers.
Simi Valley
Sandalwood Dr.
Project Timeline:
August 28, 2017 – February 2018
Working Hours:
7 a.m. – 4 p.m.
Construction crews worked to recoat the Lauenschalger Plant Tank 2.
View the Construction Notice.