Ventura County, California

Cross-Connection Control and Water System Compliance in Ventura County

Exodus is headquartered in Thousand Oaks and has completed cross-connection control work for the City of Fillmore and for both Port Hueneme water systems.

Completed in Ventura County

Plans, ordinances, and a program that keeps running

Our Ventura County work so far is cross-connection control for city water systems, from the written plan through the authority to enforce it.

In Fillmore, Exodus developed the City’s Cross-Connection Control Plan, stood up the first year of its program, and continues as the City’s program partner.

In Port Hueneme the work covered two systems: the City Water Department and the Port Hueneme Water Agency that supplies it. Exodus developed a Cross-Connection Control Plan and supporting ordinances for each.

Case Study

City of Fillmore

Cross-Connection Control Program

City water system serving about 16,400 people in Ventura County

Exodus developed Fillmore’s Cross-Connection Control Plan and stood up the first year of its program, and continues as the City’s program partner.

See Cross-Connection Control services →

Case Study

City of Port Hueneme

Cross-Connection Control Plans and Ordinances, Two Systems

City water department serving about 22,200 people through roughly 5,800 service connections, supplied by the Port Hueneme Water Agency

Exodus developed Cross-Connection Control Plans and ordinances for both Port Hueneme water systems.

See Cross-Connection Control services →

Services for Ventura County water systems

The services behind the Fillmore and Port Hueneme work, all available to cities, districts, mutual water companies, and private systems across Ventura County.

Who oversees water systems in Ventura County

The State Water Resources Control Board’s Division of Drinking Water (DDW) regulates California public water systems through its district offices.

In counties that have elected a Local Primacy Agency (LPA) program, the county environmental health agency oversees small community water systems with fewer than 200 service connections and noncommunity water systems, under a delegation agreement with the State Water Board. Cross-Connection Control Plans go to whichever of the two oversees your system.

The State Water Board’s district office map lists no DDW district office located inside Ventura County, so Ventura County systems are served by a district office based elsewhere. We confirm the reviewing office for your system before a plan is submitted.

Backflow testing changed in July 2025. Effective July 1, 2025, Ventura County Environmental Health stopped sending Notices to Test and accepting backflow test reports, and each water supplier now manages the cross-connection control program for its own customers. For Ventura County Waterworks Districts 1 (Moorpark), 17 (Bell Canyon), 19 (Somis), and 38 (Lake Sherwood), certified testers submit results electronically through SwiftComply. Other suppliers run their own programs, so the notice from your water supplier says where test reports go.

Not sure which office reviews your plan?

Tell us your system name or public water system number and we will identify the reviewing office as part of scoping your project.

Planning cross-connection control work in Ventura County?

Send a request or call, and we will confirm scope, the reviewing office, and next steps for your system.

Free tool

January 1 is closer than it looks

Validated water loss audits and annual water use reports are due January 1. The free deadline checker shows yours on screen.