I recently purchased a house that has all the old galvanized plumbing. Since I am redoing lots of stuff in the house anyway, I thought I'd go ahead and replace the plumbing as well. I was set to go with copper, but then I heard that some water actually corrodes copper. If that is so, under what conditions does this happen? I plan on installing a water softener, as the water is quite hard where I live if that has any bearing on it. I'm aware that a lot of people are going with PEX instead of copper. What are the advantages and disadvantages of that over copper? I also wanted to replace the main shutoff valve with a brass ball valve. Am I going to have problems with corrosion if I attach it to the galvanized supply line?
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Re-Plumbing a House