An RPZ Backflow Preventer, known also as a reverse pressure zone backflow preventer, is a backflow device which prevents polluted water in your home from reversing direction and re-entering the city potable water supply.  The rpz designation refers to the fact that water pressure supplies a steady stream of water from the city to your home, and the reversal of that pressure is not only possible but will, at some point, happen in your home.  Thus, the need for a RPZ Backflow Preventer.

RPZ Backflow Preventers can be installed by any licensed and certified backflow company, one like City Backflow Testing, the home of affordable backflow testing.