Backflow testing in Fontana, CA

Certified backflow prevention assembly testers approved by Fontana Water Company. Annual testing is required — find a local pro today.

Now accepting listingsSan Bernardino County, CA

Agency-approved testers serving Fontana

Every tester below is on a local water-agency approved list. Claimed & verified businesses appear first; the rest can be reached at their agency-published number.

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Beto's Backflow Solutionson City of San Bernardino Municipal Water's approved list · Aug 2026

Fontana, CA(909)518-7279

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Blue Water Backflow Testing and Repairon City of San Bernardino Municipal Water's approved list · Aug 2026

Fontana, CA(909)329-8577

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T. R. Plumbingon City of San Bernardino Municipal Water's approved list · Aug 2026

Fontana, CA909)899-4845

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Backflow testing requirements in Fontana

Property owners in Fontana served by Fontana Water Company are required to have their backflow prevention assemblies tested annually. If you've received a testing notice, a certified tester can complete the test and file your results directly with your water agency — keeping your property compliant with no paperwork on your end.

Fontana zip codes served: 92334, 92335, 92336, 92337