My bathroom sink cold water supply line (that comes out of the wall) is corroded through and dripping just before where the shut off valve is connected. Its hard to tell if the corroded line is copper or galvanized. There's so much corrosion build up it's hard to tell. Since there's rust, I believe it to be galvanized. A lot of white corrosion along with red rust. The house is 1962 and it seems like original pipe. Thanks
Originally asked by Chad on Stack Exchange (diy) (CC BY-SA 3.0).
