Failed-test city route

Thornton failed backflow test

Use this page when the assembly already failed and the next step is repair, retest, and accepted report submission.

City: Thornton Utility: City of Thornton Cross Connections and Backflow Prevention Cadence: At installation and at least annually after that Last verified: 2026-06-29
Local answer

What to check for Thornton

Use this page when the assembly already failed and the next step is repair, retest, and accepted report submission.

  • Due basis: Thornton says commercial, industrial, and non-single-family residences must have approved devices installed and tested annually. Test results must be submitted online to Backflow Solutions before the annual due date.
  • Notice or device clue: Look for the CCN, account number, BSI record, device ID, or assembly serial from the reminder.
  • Who is affected: Thornton commercial, industrial, irrigation, and non-single-family properties plus any service where the city identifies a cross-connection risk.
  • Acceptance rule: Report acceptance depends on using the named portal or online submission path; keep proof that the report was submitted.
  • Program phone: 720-977-6586
Notice-to-closeout map

Source-backed procedure before the record is treated as closed

This is the working path for Thornton notices: match the authority, confirm the tester gate, use the accepted submission route, and keep proof that the report was accepted.

Local signals

Signals that matter before you act

  • Thornton publicly names its covered customer classes.
  • Annual reporting is portal-based, not vague.
  • The city does not recommend any testing company over another, so the page stays utility-first.
Other Thornton routes

Stay inside the city intent cluster

Workflow

Thornton workflow order

  1. Check whether the property is in Thornton's annual inspection group.
  2. Perform the operational test with a certified technician.
  3. Submit results online through Backflow Solutions.
  4. Resolve any missing-device or inspection gaps before the annual deadline passes.
City FAQ

Thornton questions before you act

What should I do after a failed backflow test in Thornton?

Thornton publicly names its covered customer classes.

Does a failed test still need report submission in Thornton?

Report acceptance depends on using the named portal or online submission path; keep proof that the report was submitted.

Who controls the rule for Thornton?

Thornton search demand is routed to City of Thornton Cross Connections and Backflow Prevention. Thornton commercial, industrial, irrigation, and non-single-family properties plus any service where the city identifies a cross-connection risk.

What costs or fees should I expect for Thornton?

Testing is market-priced, but Thornton adds a clear reporting path and annual deadline discipline. Repair and retest costs vary by assembly type and whether the property is commercial, multifamily, or irrigation-heavy. The main value is clean routing into the city-required reporting path.