City of Anaheim Cross Connection Control
Open Anaheim's official approved tester page
- Last verified 2026-06-29
- Immediately after installation, relocation, or repair, and at least annually thereafter
California tester routes
California approved backflow tester lists by utility.
Use this page to find California utility routes where BackflowVerdict has a published official tester-list path. The governing utility page remains the route that decides the list and reporting workflow.
14 official tester routes
State guide: California backflow testing requirements
Local utility rules stay canonical
Official routes
Open the utility list before choosing a tester
Each route below points to a utility page that separates the official authority list from non-official provider discovery.
City of Modesto Cross-Connection and Backflow Control Program
Open the Modesto certified tester list from the official program page
- Last verified 2026-06-29
- Upon installation and at least annually thereafter for protected assemblies
City of Oxnard Water Division Backflow Prevention
Open Oxnard Tokay tester credential instructions
- Last verified 2026-07-06
- Annual certification requirements enforced through web-based Tokay reporting
City of Patterson Backflow Prevention Device Annual Test Program
Open Patterson's official approved tester page
- Last verified 2026-06-29
- Annual
City of Pleasanton Cross-Connection Control Plan
Open Pleasanton Aqua Backflow tester qualification rules
- Last verified 2026-07-06
- Annual testing and event-driven follow-up under the City's cross-connection control plan
City of Sacramento Department of Utilities Cross-Connection Control
Open the Sacramento approved backflow tester list
- Last verified 2026-06-29
- At installation and on the local recurring certification cycle
City of San Diego Public Utilities Backflow Program
Open the San Diego approved tester list
- Last verified 2026-06-29
- Upon installation and annually thereafter
Dublin San Ramon Services District Backflow Testing
Open DSRSD approved backflow tester list route
- Last verified 2026-07-06
- Existing backflow devices use Tokay test entry; damaged, leaking, or failed assemblies must be repaired and retested without delay
East Bay Municipal Utility District Backflow Prevention
Open the EBMUD approved tester list
- Last verified 2026-06-29
- Upon installation and annually thereafter
Irvine Ranch Water District Backflow Prevention
Open the IRWD backflow tester list
- Last verified 2026-06-29
- Upon utility notice and annually thereafter
Riverside Public Utilities Backflow Prevention
Open the Riverside approved backflow tester list
- Last verified 2026-06-29
- Upon installation and at least annually thereafter
Sacramento Suburban Water District Cross-Connection Control Program
Open SSWD cross-connection FAQs for the approved tester list
- Last verified 2026-06-29
- Upon installation and at least annually thereafter
San Francisco Public Utilities Commission Backflow Prevention Program
Open the SF.gov certified tester list for San Francisco backflow assemblies
- Last verified 2026-06-29
- On the local certification cycle for protected assemblies
Santa Rosa Backflow Prevention Program
Open Santa Rosa's certified tester list
- Last verified 2026-06-29
- Annually
Statewide certification is not the same as utility approval
Many searches mix certified, registered, and approved tester language. BackflowVerdict keeps these routes tied to the actual utility list or portal source shown on the local page.
Guides that clarify tester status
Approved testers vs find a tester
Why official tester lists and commercial directories must stay separate, and what each page type is allowed to claim.
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County-certified vs utility-approved testers
Why a county certification list, a city-approved list, and a non-endorsed handout are not the same thing even when they all help users find testers.
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Backflow reporting portals: BSI, SwiftComply, WEIRS, VEPO, Aqua, Tokay, and SpryBackflow
Find how BSI Online, SwiftComply, WEIRS, VEPO, Envirotrax, Aqua Backflow, TrackMyBackflow, Tokay WebTest, SpryBackflow, and utility customer portals affect backflow test report submission after the field test.
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