Municipal Department
City of Simi Valley / Ventura County Waterworks District No. 8
Serving Simi Valley and portions of unincorporated Ventura County served by Waterworks District No. 8
Population served
94,738; the District reports approximately 24,000 service connections and serves about 60% of Simi Valley, with 2026 planning materials describing more than 26,000 connections
State system code
FIPS 06
Billing frequency
Bimonthly for WWD No. 8 water service. Single-family sewer is generally billed through property tax, while some new, multi-family and commercial accounts receive sewer charges on the bimonthly combined utility bill.
Provider briefing
How this utility’s billing works
City of Simi Valley / Ventura County Waterworks District No. 8 operates as a municipal department serving Simi Valley and portions of unincorporated Ventura County served by Waterworks District No. 8. Customers should use the provider’s current account-specific bill and official customer-service instructions as the final authority for deadlines, balances, and service requests.
The published water-rate framework is described as Bimonthly fixed service charge plus commodity charge. Effective January 1, 2026, single-family residential service is $76.22 per two-month period and commodity water is $6.57 per billing unit, where one billing unit is 748 gallons; lift, well and recycled-water charges apply only to the relevant account type.. Bills are generated bimonthly for wwd no. 8 water service. single-family sewer is generally billed through property tax, while some new, multi-family and commercial accounts receive sewer charges on the bimonthly combined utility bill., and a typical residential cost reference is At 7,000 gallons per month, or approximately 18.72 billing units, the 2026 single-family water estimate is $76.22/2 plus 18.72 x $6.57, or approximately $161.99 per month equivalent before sewer, taxes or special charges. The District's published 2026 schedule also lists a substantial capital-improvement charge for new connections, not ordinary monthly consumption.. These descriptions are useful planning benchmarks; actual charges can change with meter size, usage, sewer averaging, local taxes, drought stages, or account-specific fees.
Wastewater and sewer calculation
Simi Valley single-family residences generally receive sanitation charges through the property-tax bill; new owners may temporarily see sewer charges on the water bill, and multi-family/commercial accounts may be billed bimonthly. The City states sewer treatment is based on service class and sewage-flow/allowance rules rather than a universal water-bill percentage; the exact account classification controls.
Meter and infrastructure notes
The District offers a free usage-tracking service. Customers without smart meters see usage by billing period; customers with smart meters receive more frequent usage information and can set alerts. The District is fully metered, and the 2026 water rate is charged per 748-gallon billing unit, but the public page does not identify the exact smart-meter vendor or transmission interval.
Emergency water support
Report a leak or water emergency
805-504-2708, Waterworks District No. 8 emergency after-hours hotline; customer service/billing is 805-583-6736.
Official starting point
Choose the right next step
Reading this profile
A practical reference for Simi Valley and portions of unincorporated Ventura County served by Waterworks District No. 8
City of Simi Valley / Ventura County Waterworks District No. 8 is listed here as a municipal department. The profile separates account actions—such as paying a bill or requesting service—from explanatory material about rates, meters, wastewater, leaks, and delinquency.
Because utility rules can vary by account class, meter size, service address, billing date, and local ordinance, treat the published bill and current provider website as the final authority. Use this profile to locate the correct channel and prepare better questions for customer service.
If your issue is urgent, start with the provider’s emergency number or official payment route rather than waiting for an email response. Keep a written record of calls, confirmation numbers, notice dates, and documents you submit.