What matters here
Denver Water treats fire-line services as part of the core program rather than an edge case.
Fire line
Denver Water Cross-Connection Control and Backflow Prevention Program fire line backflow rules
Denver Water treats fire-line services as part of the core program rather than an edge case.
Utility: Denver Water Cross-Connection Control and Backflow Prevention Program
Last verified: 2026-04-04
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
- All fire line services are required to have an approved assembly installed.
- Fire-flow and construction-related utility work should be coordinated with Denver Water forms and standards.
- Fire service can create larger and more expensive correction paths when the assembly is missing or overdue.
Workflow
Workflow
- Confirm whether the service is domestic, irrigation, or fire-line.
- Install the approved fire-line assembly before the service is placed into use.
- Keep the annual test current so the service does not move into penalty or suspension status.
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 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.
Tester routing
No public tester route is live for this utility yet. Stay on the official program path and confirm the scope directly with the utility.
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.