We live in a 2-family house and DD lives upstairs. When we bought the place we noticed that the hot water for the upstairs had a lot of white particles in it and after much arguing called in a plumber. Plumber emptied the HW tank for upstairs and it was basically all white stuff. He pulled some long rod out of the top of the tank and showed us that it was all eaten away and eroded and said that this was where all the white particles were coming from. Sounded and looked logical so we replaced HWH with a top 'o the line model last year and didn't think about it again. Well, that didn't solve the problem. DD has put a tap filter on her kitchen sink because of the particles in the water (this is city water) with not much help. The thing that is confusing to us is that we (downstairs) do not have this problem, so it must be something in the system for upstairs but what? DH pulled some water out of a faucet of theirs and it seems much hotter than the temp set on the heater. Could this be causing some deterioration in the HWH? These white particles are clearly visible when you draw hot water and do not dissipate but only sink to the bottom if left to stand for awhile. Again, since we do not have this problem in our apt, we are at a loss to understand what the heck is going on. We've tried calling some plumbers but they all say it is not something they "want to get involved in." :shrug: Any ideas?