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Denver Water Cross-Connection Control and Backflow Prevention Program irrigation backflow rules

Denver Water has a clear irrigation testing season and specific accepted assembly types for irrigation protection.

Utility: Denver Water Cross-Connection Control and Backflow Prevention Program Last verified: 2026-06-29 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.
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Direct answer

What matters here

Denver Water has a clear irrigation testing season and specific accepted assembly types for irrigation protection.

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.

Highlights

Highlights

  • Irrigation backflow testing season runs from May to September.
  • Irrigation services must use an RP or PVB depending on installation requirements.
  • Denver Water sends a reminder notice before the annual irrigation test is due.
Workflow

Workflow

  1. As irrigation season starts, confirm the assembly is ready for testing.
  2. Use the assembly type Denver Water accepts for the installation condition.
  3. Complete the irrigation test when the water is turned on and send the report to Denver Water.
Residential

Residential

  • Denver Water can pull domestic services into the program when the site hazard justifies it, so residential users should not assume the rules are only commercial.
  • Residential irrigation assemblies have their own seasonal testing rhythm when the water is turned on.
Commercial focus

Commercial and managed properties

  • Commercial and industrial services are clearly inside the Denver Water program and are a strong fit for next-action pages.
  • The penalty path makes Denver more commercially urgent than a generic educational page.
After the official step

Need local follow-up?

No public tester route is live for this utility yet. Stay on the official program path and confirm the scope directly with the utility.

Request local help

If you still need help after checking the official workflow, you can submit a request for local follow-up.

FAQ

Local questions people actually ask

Does Denver Water Cross-Connection Control and Backflow Prevention Program 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.

Who is affected by Denver Water Cross-Connection Control and Backflow Prevention Program backflow rules?

Commercial, industrial, domestic, irrigation, fire-line, and auxiliary-water-supply customers when Denver Water requires an approved assembly.

How do I submit or confirm a backflow test for Denver Water Cross-Connection Control and Backflow Prevention Program?

Use the official utility workflow and submission methods listed on this page: Denver Water backflow program, Denver Water test and maintenance report. Program phone: 303-893-2444.

Where should I look for testers for Denver Water Cross-Connection Control and Backflow Prevention Program?

No public tester directory is live for this utility yet. Use the official utility page first and do not infer approval from a generic directory.