Annual city route

Flagstaff annual backflow testing

Flagstaff requires annual testing and expects certified testers to submit results through BSI or the city compliance workflow.

City: Flagstaff Utility: City of Flagstaff Backflow Prevention Program Cadence: Annually Last verified: 2026-06-29
Local answer

What to check for Flagstaff

Flagstaff requires annual testing and expects certified testers to submit results through BSI or the city compliance workflow.

  • Due basis: Flagstaff requires annual testing for assemblies in the city program, sends courtesy notices when testing is due, and routes tester result submission through BSI Online or city compliance staff.
  • Who is affected: Flagstaff businesses and protected services with contamination risk, plus irrigation and fire sprinkler assemblies that fall inside the city cross-connection program.
  • Program phone: 928-213-2475
Local signals

Signals that matter before you act

  • Annual testing is explicit.
  • The city sends courtesy notices when annual testing is due.
  • Repairs require immediate retest and result submission.
Workflow

Flagstaff workflow order

  1. Confirm the assembly is in the Flagstaff program.
  2. Schedule a certified tester.
  3. Have the tester submit the result through BSI or the city workflow.