Backflow Test Colorado

That backflow test letter isn't junk mail.

Colorado districts must make you test your backflow assembly annually, by a certified tester — and can shut off your water when you don't. Here's what yours requires.

Get the test handled

  • Every requirement linked to Regulation 11 or your district's own page
  • Verified July 2026
  • No scare tactics — the rule, your district's process, a certified tester

How it works

  1. Decode the letter

    Your district's notice comes from a state-mandated program. What it demands, whose deadline applies, and what ignoring it costs.

  2. Know your district's process

    Some districts take reports by email, some use BSI Online or SwiftComply, one outsources to Denver Water. The letter tells you which — we translate.

  3. Book a certified tester

    Testing must be done by a certified backflow assembly tester. Send the site operator your district for review; no tester match is guaranteed.

Why the backflow letter blindsides people

The letter reads like a scam — an obscure valve, a deadline, a shutoff threat. It's real: CDPHE's Regulation 11 requires every Colorado water system to run exactly this program.

  • Every district runs its own version: different deadlines, different forms, three different submission systems. The state literally hands each supplier a template and lets them fill in the blanks.
  • Ignore it and the water goes off — and turning it back on isn't free. Denver Water's own FAQ covers the $250 charge that lands on your bill after a backflow shutoff.

Start with the letter

The backflow test letter, decoded — why Colorado districts send it Your water district's backflow test notice comes from a state mandate. What Regulation 11 requires, whose deadline applies, and what ignoring it actually costs. What a backflow test costs in Colorado — and what skipping it costs What drives the price of an annual backflow test in Colorado, why quotes differ, and the one number we can verify: the charge after a shutoff. Sprinkler backflow testing — why your irrigation triggered the letter Irrigation systems are why most Colorado homeowners get a backflow notice. What the sprinkler backflow does, when to test, and how startup fits in. Where your backflow test report goes — Colorado districts compared Every Colorado water district takes backflow test reports its own way — email, BSI Online, SwiftComply, or another district entirely. The verified list. Denver Water backflow test: filing, deadlines, the $250 rule How Denver Water's backflow program actually works — who must test, where the report goes, the 60-day clock, and the $250 penalty after suspension. Aurora backflow test: SpryBackflow filing and the annual rule Aurora Water's backflow program under city ordinance 138-170 — who's responsible, the annual test, and the SpryBackflow portal where results must land. Colorado Springs backflow test: CSU's rules and your notice Colorado Springs Utilities requires backflow assemblies on commercial and multifamily service, tested at installation and annually. How compliance works. Thornton backflow test: BSI filing and ordinance 74-156 Thornton's backflow program — who must test under city ordinance 74-156, the annual BSI Online filing path, and the contacts when a letter confuses you. Westminster backflow test: the annual rule and BSI filing Westminster's backflow program — who must have an assembly (including well and pond owners), the install-plus-annual test rule, and how results reach the city. Arvada backflow test: the SAMS portals and annual rule Arvada's backflow program — annual testing under state drinking-water rules, the tester portal where results file, and the customer portal worth knowing.

Request help finding a certified tester

Your request goes privately to this site's operator for review; no tester match or response is guaranteed.

Prefer to talk? Call (970) 680-7991.