The capacity to stop backflow is one of a plumbing system's most crucial elements. Backflow occurs when impurities enter the supply of potable water again as a result of pressure drops in your plumbing system. To ensure that your source of potable water does not become contaminated, RPZ testing is crucial. We will certify and fill paperwork with your municipality. Here at CompleteLawn Sprinklers & Pump Service, we have certified technicians who do backflow testing and repairs. We are just a ring away.