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Annual testing

Irvine Ranch Water District Backflow Prevention annual backflow testing

IRWD requires customers who are brought into the program to maintain approved assemblies and use certified testers recognized by State Water Board-accepted organizations.

Utility: Irvine Ranch Water District Backflow Prevention Last verified: 2026-04-04 Due basis: IRWD says customers will be notified when a backflow assembly is required and points them to a partial list of certified testers who can perform testing in the district.
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Direct answer

What matters here

IRWD requires customers who are brought into the program to maintain approved assemblies and use certified testers recognized by State Water Board-accepted organizations.

Due basis: IRWD says customers will be notified when a backflow assembly is required and points them to a partial list of certified testers who can perform testing in the district.

Highlights

Highlights

  • The district notifies the customer when an assembly is required.
  • Certified testers recognized by state-approved organizations perform the work.
  • A district-specific maintenance report form is part of the workflow.
Workflow

Workflow

  1. Confirm whether IRWD has designated the service for backflow protection.
  2. Choose a tester from the district's partial list or another recognized certified tester.
  3. Keep the district's maintenance report and annual testing current.
Residential

Residential

  • IRWD is useful because it does not hide the possibility that residential properties can be required to install and maintain assemblies when hazard conditions exist.
  • Residential irrigation and special-use connections are part of the risk-based story even if IRWD does not mass-label every home as regulated.
Commercial focus

Commercial and managed properties

  • Commercial and industrial customers are squarely inside IRWD's backflow program when hazard potential exists.
  • IRWD's hazard-based explanation is strong support content for commercial next-action pages.
FAQ

Local questions people actually ask

Does Irvine Ranch Water District Backflow Prevention require annual backflow testing?

Upon utility notice and annually thereafter. IRWD says customers will be notified when a backflow assembly is required and points them to a partial list of certified testers who can perform testing in the district.

Who is affected by Irvine Ranch Water District Backflow Prevention backflow rules?

Residential, commercial, and industrial customers when IRWD determines that the potable system may be exposed to contamination through a backflow condition.

How do I submit or confirm a backflow test for Irvine Ranch Water District Backflow Prevention?

Use the official utility workflow and submission methods listed on this page: IRWD Backflow Prevention, IRWD Backflow Test and Maintenance Report form, IRWD tester list. Program phone: 949-453-5300.

Where should I look for testers for Irvine Ranch Water District Backflow Prevention?

Start with the governing authority's published tester list. This utility has an official approved-tester route and it should be treated as the primary source.