A backflow prevention device prevents contaminated water or chemicals from flowing back into the public drinking water supply system. Certain properties require a backflow prevention device. It would be best to consult with a Licensed Professional Engineer (PE) or Licensed Registered Architect (RA) to be sure if your property is required to have a device. If your property requires a backflow preventer, the device will need to be inspected and tested by a licensed professional yearly.
Backflow Prevention Installations and Testingcass2021-06-11T19:18:51+00:00