In Broomfield, the City and County runs its cross-connection control program through Backflow Solutions, Inc., and test reports go on BSI Online from a tester with a current backflow license and an annually calibrated gauge. For a test, a repair or a new assembly, call the number on this page to be connected with a local plumber in Broomfield.

Reasons to book a backflow visit
- A reminder arrived about a test report due through BSI
- The irrigation assembly failed and needs parts and a retest
- You see water coming from the device when the sprinklers run
- You're adding irrigation or another connection that the city may want protected
- A device sat full of water through a freeze
Backflow in the City and County of Broomfield
Broomfield is a consolidated city and county with its own water utility. It treats Colorado-Big Thompson water at its own plant and blends it with treated water bought from Denver Water, so the supply in the pipes is a mix of both. Because Broomfield runs the system, Broomfield sets the backflow rules here, not Denver Water.
The city hands day-to-day administration of the cross-connection program to its contractor, Backflow Solutions, Inc. A tester working in Broomfield has to hold a current backflow license and keep a test gauge calibrated every year, and reports are filed on BSI Online. If you hire someone who isn't set up with BSI, the report may not reach the city, so it pays to ask before the visit.
Homes along US-36 and around FlatIron Crossing range from older subdivisions to recent builds, and many have in-ground irrigation. Assemblies on those systems sit outside through freezing nights, so fall drain-downs matter. The sheet notes Broomfield's municipal system serves the city and county with few wells in the picture.
What affects what you pay
- Visit scope. A routine test and filing is shorter than a rebuild and retest.
- Device type. Reduced pressure assemblies take longer to test and repair than simpler devices.
- Freeze damage. A split housing usually means replacement.
- Paperwork. Filing the report on BSI Online is part of the visit when the tester is registered there.
- Related permit work. Broomfield's Building Division permits plumbing work such as water heaters and sewer line repairs, so a larger project may bring its own permit.
When you call
You'll be connected with an independent plumber who serves Broomfield. Mention that reports go through BSI Online, and ask whether the tester is registered there. If the device is leaking, shut off the irrigation supply valve while you wait.
Backflow Testing questions in Broomfield
Who is qualified to run the test on my assembly?
Where do the test results go once the test is done?
Why does an underground sprinkler system need a backflow preventer?
Why is my backflow preventer dumping water from its relief port?
More plumbing services in Broomfield
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