Immediately after installation, relocation, or repair, and at least annually thereafter
City of Anaheim Cross Connection Control
Anaheim is a strong Southern California utility because it publishes annual testing rules, approved-list gating, online submission, and utility specifications for irrigation and proposed fireline work.
Annually once the assembly is in the city program
City of Fresno Water Division Cross Connection and Backflow
Fresno is a strong California utility because it runs a visible Cross Connection Control program, mandates annual testing, and adds city-supervised cross-connection testing for recycled-water sites.
Upon installation and at least annually thereafter for protected assemblies
City of Modesto Cross-Connection and Backflow Control Program
Modesto is credible because the city program and certified tester path live on the same official utility surface.
Annual
City of Patterson Backflow Prevention Device Annual Test Program
Patterson has unusually actionable municipal content because the city explains the January letter cycle, the owner response workflow, and a current table of approved outside testers.
Annually
City of Roseville Water Utility Cross-Connection and Backflow Prevention Program
Roseville is a strong California utility because it makes annual testing, 30-day failed-assembly repair timing, and water-shutoff risk explicit on public pages.
At installation and on the local recurring certification cycle
City of Sacramento Department of Utilities Cross-Connection Control
Sacramento is a useful California utility because city drinking-water pages and county cross-connection operations meet in an actual approved-tester workflow.
Upon installation and annually thereafter
City of San Diego Public Utilities Backflow Program
San Diego is one of the best California fits because the city publishes annual testing rules, an approved tester list, a tester-orientation gate, and explicit enforcement consequences.
Annually after the assembly is required by the city program
City of Santa Clara Water & Sewer Utilities Cross-Connection Control
Santa Clara is a strong California city because it maps the new statewide policy handbook to concrete local triggers like irrigation, residential fire sprinklers, booster pumps, and taller buildings.
Upon installation and annually thereafter
East Bay Municipal Utility District Backflow Prevention
EBMUD supports trustworthy utility pages because it publishes an approved tester list, official policy links, and fire-flush rules that make the program operationally concrete.
Upon utility notice and annually thereafter
Irvine Ranch Water District Backflow Prevention
IRWD is a good California district page because it clearly explains when the district will require an assembly, what assembly types it recognizes, and where customers can find certified testers.
Annually and whenever the assembly fails or is replaced
Pasadena Water and Power Cross-Connection Control Program
Pasadena is a strong Los Angeles-area page because the utility publishes real annual-testing and failed-test workflow, but the tester route is county-certified rather than city-approved.
Upon installation and at least annually thereafter
Riverside Public Utilities Backflow Prevention
Riverside is a strong California utility because it combines annual testing language, an official approved tester list, and direct utility enforcement around accepted reports and restored service.
Upon installation and at least annually thereafter
Sacramento Suburban Water District Cross-Connection Control Program
SSWD is a strong district page because approved testers and annual test entry live inside a real utility workflow.
On the local certification cycle for protected assemblies
San Francisco Public Utilities Commission Backflow Prevention Program
San Francisco is a strong approved-tester utility because SF.gov publishes a genuine certified tester list with contact details.
At least annually
San Jose Water Cross-Connection Control and Backflow Program
San Jose Water is a strong California utility because it combines annual testing, hazard-based install rules, fire-service coverage, and a dedicated backflow department.
Annually
Santa Rosa Backflow Prevention Program
Santa Rosa is a high-quality California utility page because annual testing, 30-day notice timing, tester authorization, and enforcement all sit on public city documents.
