Simi Valley

Simi Valley

Overview

Golden State Water has proudly served Simi Valley since 1965, providing quality, reliable water to approximately 13,300 local customers.

Water delivered to customers in the Simi Valley System is treated surface water purchased from the Calleguas Municipal Water District, which obtains its supply from the Metropolitan Water District of Southern California. The primary water supply is supplemented with Simi Valley Groundwater Basin groundwater. To meet the strictest drinking water standards, the treated surface water from Calleguas MWD (81.7%) and groundwater (18.3%) is blended and routinely tested for water quality before being delivered to customers.

Post

Conservation

Following several months of storms bringing much-needed snow and rain to California, conditions have dramatically changed for many parts of the State. In response, Governor Newsom has rolled back some drought emergency provisions that are no longer needed while maintaining other measures that support regions and communities still facing water supply challenges.

Effective Sunday, May 14, 2023, Golden State Water Company modified outdoor watering restrictions to allow for 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
Post

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.

2020 GRC (2023 Rates)

Effective July 31, 2023, the California Public Utilities Commission approved the 2020 GRC which includes new rates to ensure the safety and dependability of your local water system. Click here to learn more. Learn more about the rate-making process and localized information on new rates and investments in the 2022-24 Investments/Rates Fact Sheet .

  • The average residential customer in the Simi Valley Customer Service Area with a 5/8 x 3/4” meter using 8,976 gallons (1,200 cubic feet or 12 Ccf) per month will see their monthly bill increase from $72.47 to $73.73 (excluding any applicable surcharges).
  • The average commercial customer in the Simi Valley Customer Service Area with a 2” meter using 41,140 gallons (5,500 cubic feet or 55 Ccf) per month will see their monthly bill increase from $412.06 to $419.70 (excluding any applicable surcharges). 

2023 GRC (2025 Rates)

As required by the CPUC every three years, in August of 2023, Golden State Water Company filed its 2023 General Rate Case (GRC) with the California Public Utilities Commission. This rate plan proposes local infrastructure investments and water rates for the years 2025, 2026 and 2027. Any adjustments to current rates will not go into effect until January 2025, at the earliest. Click here to learn more. Learn more about the rate-making process and localized information on new rates and investments in the 2025-27 Proposed Investments/Rates Fact Sheet.

  • 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 2023 monthly bill increase from $68.81 to $80.09 in 2025, at the earliest (excluding any applicable surcharges). 
  • The average commercial customer in the Simi Valley Customer Service Area with a 5/8 x 3/4” meter using 36,652 gallons (4,900 cubic feet or 49 Ccf) per month will see their 2023 monthly bill increase from $232.92 to $274.93 in 2025, at the earliest (excluding any applicable surcharges). 

​​Learn More

Understanding Your Tariff Sheet

Review All Rates, Tariffs and Advice Letters

Post

Capital Projects

GRC 2020 General Case (2022-24)

The General Rate Case approved June 29, 2023 invests over $9 million in the Simi Valley Customer Service Area. The new rates are being invested in your service area’s major reservoir upgrades, structural improvements at water treatment plants, reduced noise pollution, and backup power equipment.

GRC 2023 General Case (2025-27)

The rates proposed for 2025-2027 will provide customers with long-term value by investing over $13.7 million in proactive 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 safety equipment.

Current & Upcoming Projects

Recently Completed Projects

outline of Sycamore Drive Project

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.
 

outline of Royal Avenue Project

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.
 

outline for Sandalwood Drive Project

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.