Denver backflow prevention requirements
Start with the utility page to confirm who is affected, accepted submission methods, phone contact, and source evidence.
City backflow route
Denver backflow testing routes through Denver Water Cross-Connection Control and Backflow Prevention Program.
City search demand maps directly to Denver Water's governing program. This page keeps the city search term visible while routing the actual compliance work to the governing utility record.
City: Denver
Utility: Denver Water Cross-Connection Control and Backflow Prevention Program
Cadence: Upon installation and annually thereafter
Last verified: 2026-06-29
Next action
Pick the Denver backflow path that matches the problem
The city term helps discovery. The governing utility still decides the rule, submission method, tester route, and follow-up order.
Denver 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.
Denver failed backflow test
Use the failed-test page when the assembly has already failed and the next step is repair, retest, and report submission.
Denver irrigation backflow testing
Use this path when the question is tied to sprinkler systems, reclaimed water, outdoor service, or irrigation assemblies.
Denver fire-line backflow testing
Use this path when the assembly serves fire protection equipment or a managed commercial site.
City intent map
Denver pages linked from this hub
These routes keep local searches connected to the exact city, while each page still routes back to the governing utility record.
Denver annual backflow testing
Denver annual backflow testing: verify who must test, the due-date rule, tester requirements, and the official submission workflow.
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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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Check the local rule before treating this as a generic tester search
- Cadence: Upon installation and annually thereafter
- 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.
- Submission: Denver Water backflow program
- Acceptance rule: Use the listed submission method and keep proof that the report was filed with the utility.
- Cost signal: Testing is market-priced, but Denver Water adds real compliance cost through penalties and suspension risk.
Denver action split
Why Denver maps to Denver Water Cross-Connection Control and Backflow Prevention Program
City search demand maps directly to Denver Water's governing program.
- Commercial, industrial, domestic, irrigation, fire-line, and auxiliary-water-supply customers when Denver Water requires an approved assembly.
- Denver Water can assess a $250 penalty after three unanswered notification letters and can move service into suspension status when testing or installation is not completed.
- Program phone: 303-893-2444
- City route reviewed: 2026-04-04
Source-backed workflow
Denver Water is one of the clearest Colorado programs because it publishes annual reminder timing, irrigation season rules, a penalty path, and a direct reporting address for the cross-connection office.
Support guides
Read these before acting on the Denver workflow
Backflow test notice: what to do next
What to check when a city, utility, BSI, SwiftComply, VEPO, or water district sends a backflow test notice.
How we verify local backflow rules
What counts as an official source, how local utility pages override generic assumptions, and how stale pages are re-verified.
Backflow test due dates: anniversary date vs calendar deadline
Why some utilities track annual backflow tests by anniversary date, while others use a calendar window, notice date, or hard deadline.
Residential vs commercial backflow rules
Why the local trigger is rarely just residential versus commercial, and how utilities actually split hazard, irrigation, multifamily, and managed-property cases.