My apologies if this is a duplicate thread. I searched for a few minutes and didn't find anything relevant or similar. I thought it might be a good idea to have a place where the more "vocationally inclined" members can offer their expertise to some of the forum's less handy members (like myself). So I recently had a plumber over to perform a number tasks that had been piling up. At one point he "tested" the incoming water pressure. That is to say he tested how much water pressure the city utility was using to input the water to my house. He told me that the water pressure was too high and that this was causing undue stress on the house's plumbing system. He said that over time this could cause a gradual breakdown of the plumbing system. His solution was to install a "pressure regulation system" that would cost me several hundred dollars now, but save me from the gradual breakdown in the future. Is this for real, or is this guy trying to scare me into spending money on something I don't need?