When is it necessary to have an Reduced Pressure Zone (RPZ) or an RPZ device?

RPZs are required by code for all irrigation system installations.


A reduced pressure zone (RPZ) device is required by plumbing code. RPZs are the industry standard protection device for single-family homes,  any type of commercial property, apartment building or condominium irrigation system installation.

RPZs provide the highest level of protection against pollutants and toxins entering the potable water supply.