I got a question for any plumbers or handymen/women. Can I use galvanized pipe in for my shower? I am trying to replace the shower faucet because it was old and leaking and I noticed there was galvanized pipe in the wall running to the shower? I thought it should have been copper but I'm clueless so I am trying to find out before I get it all buttoned up. Should I run copper, PVC, or is it ok to use the rusty galvanized pipe that was already there?