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Failed-test city route

Lewisville failed backflow test

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

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City: Lewisville Utility: City of Lewisville Backflow Testing Cadence: At installation and at least once per year thereafter Last verified: 2026-06-29
Local answer

What to check for Lewisville

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

  • Due basis: Lewisville says backflow prevention assemblies must be tested at installation and at least once per year thereafter by a licensed tester registered with the City. Test reports must be submitted electronically through BSI Online within ten days of the test date.
  • Who is affected: Irrigation, fire sprinkler, commercial, industrial, multi-family, and other properties the City deems a cross-connection hazard.
  • Program phone: 972-219-3400
Local signals

Signals that matter before you act

  • Late reports can miss Lewisville's ten-day submission rule even if the test itself was completed.
  • The City warns that not every registered tester can test every assembly type.
  • Lewisville's code language includes service shutoff and fine exposure.
Workflow

Lewisville workflow order

  1. Confirm the property falls into one of Lewisville's listed hazard categories or has received a City notice.
  2. Use a Texas-licensed tester who is currently registered with the City of Lewisville.
  3. Submit the completed test through BSI Online within ten days of the test date.
  4. Use the tester list carefully, because not every tester is licensed for every assembly type.