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 Metropolitan Water District of Southern California. The primary water supply is also supplemented with groundwater from the Simi Valley Groundwater Basin.

To view Golden State Water’s 2019 holiday schedule, please click here.

As a regulated utility, 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.

  • Effective April 20, 2017, an 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) of water per month, would see a monthly bill increase of $0.60 from $56.53 to $57.13 compared to 2016 (excluding any applicable surcharges).
  • Effective July 1, 2018, local water rates will decrease by 1.5% to pass cost savings from the new lower federal corporate income tax requirement through to customers. Click here to learn more.
  • Golden State Water’s rates for 2016, 2017 and 2018 were approved by the CPUC in March 2017. The GRC approval was originally expected prior to Jan. 1, 2016, and the delayed approval prevented Golden State Water from implementing the new rates for 2016 on schedule (2015 rates remained in place during the delay period). For additional information on local water rates, please click here. To review frequently asked questions about water rates, read our fact sheet. English | Spanish
  • For additional information on proposed water rates for the years 2019, 2020 and 2021, please click here.

More than $1.2 million in infrastructure improvements are planned for 2018 in the Simi Valley service area.

The 2018 investments include water supply enhancements, distribution and ongoing improvements designed to replace old meters, mains and safety equipment. Click here to learn more and access a list of projects planned for 2018.

To view current and completed projects in your area, click here.

Urban Water Management Plan (UWMP)
Every five years, UWMPs are prepared for systems that supply more than 3,000 acre-feet of water per year or serve more than 3,000 connections. UWMPs are prepared to support long-term planning goals and ensure that adequate water supplies are available to meet existing and future water demands.

Please click here to learn more or view the UWMP for your area.

On April 7, 2017, Governor Jerry Brown issued an executive order lifting the drought emergency for most of the state, while asking Californians to continue using water responsibly and make conservation a way of life.

Local water-use and outdoor irrigation restrictions implemented during the drought emergency have been lifted.

For tips on how to continue using water wisely, visit Water Wise Gardening in Ventura County.

Local News & Updates

Spring Landscape Transformation Class Series
Flower collage

Calleguas MWD will host free landscape training sessions on Feb. 16,  March 16 and April 20.

Learn how to create a sustainable and beautiful garden.

Click here for more information.

Golden State Water Donates More Than 8,000 Turkeys Through Operation Gobble

Happy turkey wearing Pilgrim-style hat During the month of November 2018, Golden State Water donated more than 8,000 turkeys through Operation Gobble to help families and individuals with limited resources.

Click here to learn more.

Customer Alert: Be Aware Of Utility Scams
Customer using cell phone with words "scam alert" written along the bottom of the image.

Golden State Water encourages customers to be alert of utility scams.

Click here are some general tips to help you avoid becoming a victim.

Customer Alert: Water Quality Update For Simi Valley Service Area
Golden State Water Company logo

Golden State Water is alerting customers to misinformation being spread regarding Simi Valley water quality. The water Golden State Water delivers in Simi Valley continues to meet all quality and safety standards.

Click here to learn more.