Do I need to have my RPZ certified annually?

Yes - annual certification is required by the state and protects your home's water supply.


Yes. This is a state requirement. DRF offers RPZ certifications where a reduced pressure zone device (RPZD) is tested with a device called a differential gauge. This gauge uses hoses attached to the various test cocks of the RPZD and checks to be certain that the check valve springs as well as the relief valve spring are not fouled and are working properly.  This protects your family and your home’s water supply.