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 Sept. 27, 2019, an average residential customer in the Simi Valley Customer Service Area would see a monthly bill increase of $0.144 per 748 gallons (1 Ccf), or approximately 2.5 percent, during the 12-month amortization period.
  • Effective June 8, 2019, an average residential customer in the Simi Valley Customer Service Area with a 5/8 x 3/4” meter using 11 Ccf per month, would see a monthly bill increase of $3.72 from $59.48 to $63.20 compared to 2018 (excluding any applicable surcharges).
  • On May 30, 2019, Golden State Water’s GRC was approved by the State of California to set water rates for 2019, 2020 and 2021 and authorize infrastructure investments for the local system. New rates were implemented effective June 8, 2019. Learn more here. (English | Spanish)
  • On July 1, 2018, local water rates decreased 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 plans to invest approximately $115 million companywide for infrastructure projects in 2019, because proactive system maintenance is critical to protecting water service now and for future generations.

More than $850,000 in infrastructure improvements are planned for 2019 in the Simi Valley service area.

The 2019 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 2019.

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

Disaster Relief Customer Protections

Golden State Water has an Emergency Disaster Relief Program that provides protections for residential and small business customers impacted by wildfires or other natural disasters.

Click here to learn more.

Caleguas Municipal Water District Rain Barrel Sale

Calleguas Municipal Water District is sponsoring a rain barrel sale on Saturday, February 15th from 9 a.m to 11 a.m. Customers are eligible for a $35 barrel rebate with a limit of two per household.

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.

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

In November 2019, Golden State Water worked in partnership with elected officials and community leaders to distribute more than 8,000 turkeys throughout California.

Click here to learn more.  l  Watch video.