A backflow preventer is a one-way valve assembly installed on a water line to keep contaminated water from flowing back into your drinking-water supply. Your home needs one wherever there’s a possible cross-connection — most commonly on lawn irrigation, fire sprinkler systems, hose bibs in some jurisdictions, and any commercial equipment that uses water.

Why it matters

  • Protects drinking water from contamination during pressure drops
  • Required by state and local code on irrigation and many commercial uses
  • Failures can allow pesticides, fertilizers, or pool water into your supply
  • Must be tested annually by a certified tester

We install, test, repair, and replace through our backflow prevention service, and we handle irrigation-specific PVB work too.