.....this past summer I moved into a new house and in my attached 2 car garage is a water softener. After following this post I got curious and took a close look at some scrap steel piping I have stored right next to the water softener: rust all over the pipes but concentrated mostly on the sides facing the softener. I use salt in the thing. Good grief......guess I'll relocate those pipes (at my old home those pipes didn't rust a bit). Dave