I just had my third pin hole leak in my utility room in the past year. Two where on the main vertical water line just inside the house and the third in a horizontal pipe down the line. We replace the sections of copper that had the leaks, but now I'm scared that we will never see an end to this. Is there anything we can do besides replumb the house? We are also in Maple Grove MN. The same location of the person that started this thread.