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Looking for a reliable backflow tester
in your area?

We are a 5 star rated backflow testing company located out of northeast San Antonio.

We service a wide area and would love to become your trusted backflow tester!

Backflow Tester Truck

As a family-owned local San Antonio business, we understand the importance of keeping your loved ones and property safe. That's why we're dedicated to providing top-quality backflow testing and prevention services to homes and businesses throughout the area.

We strive to bring education and understanding to the topic of backflow prevention. Offering flat rate and straight forward pricing, we take the hassle out of your annual test.

See our list of just a few of the main areas we service

Schedule Your Backflow Test!

San Antonio area home of GMR Backflow

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