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Denver annual backflow testing

Denver Water requires certified testers to test assemblies on installation and annually thereafter, then report the results to the cross-connection control office.

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City: Denver Utility: Denver Water Cross-Connection Control and Backflow Prevention Program Cadence: Upon installation and annually thereafter Last verified: 2026-06-29
Local answer

What to check for Denver

Denver Water requires certified testers to test assemblies on installation and annually thereafter, then report the results to the cross-connection control office.

  • Due basis: Denver Water sends a testing reminder 30 days before the annual test is due, expects certified testers to report results to the Cross-Connection Control office, and can assess a $250 penalty after repeated ignored notices.
  • Notice or device clue: Look for the utility name, service address, assembly serial number, account or notice ID, and due date.
  • Who is affected: Commercial, industrial, domestic, irrigation, fire-line, and auxiliary-water-supply customers when Denver Water requires an approved assembly.
  • Acceptance rule: Use the listed submission method and keep proof that the report was filed with the utility.
  • Report workflow: Denver Water test report email workflow
  • Credential gate: Certified backflow prevention assembly tester status, ABPA or ASSE certification for domestic and irrigation backflow assemblies, State of Colorado Fire Suppression System Contractor-Backflow certification for fire assemblies
  • Program phone: 303-893-2444
Evidence-backed next step

Use the governing utility workflow

City search demand maps directly to Denver Water's governing program.

Open annual testing workflow
Notice-to-closeout map

Source-backed procedure before the record is treated as closed

This is the working path for Denver notices: match the authority, confirm the tester gate, use the accepted submission route, and keep proof that the report was accepted.

Authority Denver Water Cross-Connection Control and Backflow Prevention Program
Notice trigger Look for the utility name, service address, assembly serial number, account or notice ID, and due date.
Tester gate Confirm tester eligibility with the governing utility before scheduling.
Submission route Denver Water test report email workflow
Proof to keep Use the listed submission method and keep proof that the report was filed with the utility.
Failure branch Open failed-test workflow before treating repair, retest, or resubmission as complete.
Local signals

Signals that matter before you act

  • The utility sends reminder notices 30 days before the annual due date.
  • Test reports are sent to the cross-connection control office.
  • A penalty path exists after repeated ignored notices.
Other Denver routes

Stay inside the city intent cluster

Denver failed backflow test What to do after a failed backflow test in Denver: repair, retest, and confirm accepted report submission with the utility.
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Denver irrigation backflow testing Check Denver irrigation backflow testing triggers, device rules, tester requirements, and the official utility workflow.
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Denver fire-line backflow testing Check Denver fire-line backflow testing triggers, assembly rules, tester requirements, and the official utility workflow.
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Workflow

Denver workflow order

  1. Watch for Denver Water's annual reminder.
  2. Use a certified tester to complete the test.
  3. Submit the test report to the cross-connection control office before the service moves toward suspension.
City FAQ

Denver questions before you act

Does Denver require annual backflow testing?

Upon installation and annually thereafter Denver Water sends a testing reminder 30 days before the annual test is due, expects certified testers to report results to the Cross-Connection Control office, and can assess a $250 penalty after repeated ignored notices.

What should I check on an annual notice for Denver?

Check the due date, service address, device record, accepted tester route, and submission method before scheduling.

Who controls the rule for Denver?

Denver search demand is routed to Denver Water Cross-Connection Control and Backflow Prevention Program. Commercial, industrial, domestic, irrigation, fire-line, and auxiliary-water-supply customers when Denver Water requires an approved assembly.

What costs or fees should I expect for Denver?

Testing is market-priced, but Denver Water adds real compliance cost through penalties and suspension risk. Repair and retest cost varies widely by domestic, irrigation, or fire-line assembly type. The financial risk is not just the tester invoice; it is also Denver Water's penalty and service-interruption exposure.