I just found out that both incoming water line and in house is this stuff. My plumber says bad news, will for sure leak sooner or later. No leaks for 9 years thus far. How likely am I to have problems? I have sent for and returned claim form from that group established by the court case, but it says you must first have a leak, and why does it expire after another few years, I wonder? Any advise/opinions I would appreciate. Our cholrine level is 1 ppm the county said, or less. Thanks.