A locally operated, state-certified backflow prevention company serving Ontario, CA and the Inland Empire.
Ontario Backflow Testers is a locally operated backflow prevention company based in Ontario, CA. We focus exclusively on backflow testing, repair, installation, and annual compliance management for residential, commercial, and industrial properties throughout the Inland Empire.
We are a state-certified backflow testing company, fully licensed and insured in California. Every test is performed by a certified tester using calibrated field equipment, and every passing result is filed directly with your local water provider the same day — no paperwork on your end.
We work with homeowners, property managers, apartment complexes, commercial property owners, and general contractors. Whether you have a single backflow assembly or manage dozens of units across multiple properties in the Inland Empire, we have a service model that fits.
(909) 296-4587After every test we submit your compliance report directly to your local water provider. No forms, no portal logins — you do nothing.
We test, repair if needed, and file with your local water provider in a single visit. Most Inland Empire properties are done in under an hour.
We stock Watts, Febco, Wilkins, and Ames repair kits on every service vehicle. Most failed assemblies get repaired and re-filed the same visit.
We quote repair or replacement cost before touching anything. If it's cheaper to replace than repair, we'll tell you — and explain why.
We're approved filers for every major water provider in the Inland Empire — if your property is in our service area, we can test and file for you.
Managing multiple units? We track due dates for every assembly you manage, schedule visits automatically, and file every report without a single call from you.
State-certified backflow testing, repair & installation in the Inland Empire. We file with your local water provider for you.