How often must you have backflow preventer testing done?

In the state of Texas, backflow preventer testing must be conducted one a year, and it must be conducted by a licensed backflow testing agency with current licenses and backflow certification.  That means that the testing agency must meet Federal, state and local municipality standards when testing your backflow preventer devices.

Backflow is a serious potential problem and it must be addressed by every homeowner and business owner so that all citizens are assured of having a potable water supply free of pollutants.