Backflow Testing in Denver: Rules, Costs, Testers

Backflow testing in Denver

In the Denver area, each water utility runs its own backflow program: Denver Water and Aurora Water each set who must test, when the report is due and how it is filed. 33 listed testing companies work within 30 miles of Denver.

Each fact links the page it came from. Utility and state pages were read October 6 and 7, 2026.

Who has to test in Denver

The rule depends on the utility that sends your water bill. Each line below is from that utility's own page.

Denver Water: All commercial, industrial, domestic, irrigation and fire line services must have an approved backflow prevention assembly; single and multi-family homes are assessed by site hazard.
Aurora Water: A Certified Backflow Technician must run operational tests on every required assembly at installation and at least annually after that.

Sources: Denver Water; Aurora Water

How each utility takes the test report

Most utilities here take the report online through a vendor portal; the tester files it. Open a utility for its own deadline, filing steps and fees.

Utility	Report filed through	Approved tester list	Published fee
Denver Water	See the utility page	None found	None found
Aurora Water	SpryPoint	None found	None found

What testing costs in Denver

No utility or testing company in the Denver area has a published price on file here yet. Prices published elsewhere are in our cost guide; ask two or three companies below for a written quote.

If the test is missed

Denver Water: A $250 penalty is charged after three mailed notices go unanswered and the service goes into suspension status; it is not refunded.

Source: Denver Water

Colorado rules behind the local programs

State rules set the minimum; the utilities above add their own deadlines and tester registration.

Under Colorado HB25-1077 (signed March 28, 2025), certified cross-connection control technicians may inspect, test and repair backflow prevention devices.
HB25-1077 amended C.R.S. 12-155-118 so that people who inspect, test or repair backflow prevention devices no longer need a plumbing licence, while people who install or remove them still do.
Colorado law (C.R.S. 25-8-107, added by HB25-1077) defines a certified cross-connection control technician as someone holding a valid backflow prevention assembly tester certification from ASSE or ABPA.

Sources: Colorado rule; Colorado rule; Colorado rule

Common questions

Who requires backflow testing in Denver?

Your water utility. Denver Water and Aurora Water each run a program; check the notice your utility sends for your due date.

How is the test report filed?

Online in most cases: at least one utility here uses SpryPoint. The tester files the report; ask them to send you a copy.

Backflow testing companies near Denver

What the badges mean

✓ CO Utility-Approved Tester Verified On the city list: The company is on a water utility's own approved list (the second badge names the list). That is the utility's approval, not a state license, and it counts for that utility.
3 certified testers: How many certified testers the roster lists at this business.
★ 4.8 (25 reviews): The Google rating, shown as Google reports it. It does not change the order.

Order is by our quality score, never by payment. How we verify listings.

Integrity Fire & Safety Services

90/100

✓ CO Utility-Approved Tester Verified ★ 3.2 (74 reviews) On City of Longmont listOn Town of Berthoud list Backflow Testing

317 Inverness Way S, Englewood, CO 80112 · under 1 mile from Englewood

Call (303) 557-1820 Details Website