For years it has been reported that poly pipe and plastic fittings are a disaster waiting to happen. Oxidants in public water causes poly to wear away from contact with plastic fittings. Poly pipe reacts poorly with the oxidants in tap water and becomes fragile. The trouble is from within; deterioration of the pipe takes place from within making it unforeseeable. There are no signs of impending leaking, and when it goes - it goes! Last but not least, insurance companies purportedly cancel or refuse policies for houses with poly pipe problems.