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Questions about Backflow?

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Quick answers, no plumber jargon

FAQs about backflow services

Got questions about testing, repairs, or installations? We’ve got the answers. Here’s everything you need to know to keep your water safe and your business running smoothly.

What is backflow?

Backflow is the unwanted reversal of water flow and contaminants from any location into your drinking water system's distribution pipes.

What is a backflow assembly?

A backflow preventer/assembly is a plumbing device installed to stop contaminated water from flowing backward. When properly installed, tested, and maintained, these devices protect your community's water supply.

Am I required to have a backflow assembly?

Control of cross-contamination through backflow prevention is required in most situations, including irrigation water meters, multi-family housing, and all commercial and industrial properties.

Does my backflow assembly need to be tested?

Yes, if you received a backflow test notice from your Water District, you must have the test done within the given timeframe. Even without a notice, it's a good idea to test each backflow assembly at least once a year.

What happens if I do not have my backflow tested?

Failing to test your backflow assembly can lead to fines for not following the rules, and your water service might even be stopped or terminated to protect the public water system.

Why do I need my backflow assembly tested annually?

California law requires backflow preventers to be tested at least once a year to ensure drinking water safety. Regular testing also helps avoid bigger, more expensive repairs later on.

Does my water get interrupted during a test?

In most cases, water service needs to be interrupted for five to ten minutes to properly service your backflow preventer.

What Our Clients Say

Trusted by businesses across Northern California for 27 years. Here’s why our customers keep coming back for backflow testing, repairs, and more.

“All Pro Backflow handled our annual testing quickly and professionally. Their team explained everything in plain English and made sure we were compliant. Five stars!”

Jamie L.
Facilities Manager, NorCal Logistics

“We needed an emergency repair on a Friday night—All Pro Backflow showed up fast and got us back in business. Can’t recommend them enough!”

Carlos M.
Property Manager, Sierra Commercial Realty
2 all pro backflow staff

Got questions? We’ve got answers.

Find quick solutions to common backflow concerns, from testing to repairs. Still need help? Our team is just a call away—let’s keep your water safe and your business flowing.