Agency-approved testers serving Rialto
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.
PB
Pro Backflow Testing Serviceson City of San Bernardino Municipal Water's approved list · Aug 2026
Rialto, CA(909)782-0770
Backflow testing requirements in Rialto
Property owners in Rialto served by City of Rialto Water 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.
Rialto zip codes served: 92376, 92377