I had a flood, due to a leaking pipe in my attic crawlspace (brick house,
built 1943, Tucson AZ, pipe likely put in during 1970 kitchen remodel).

The leak was apparently due to corrosion the plumber attributed to
a mixture someplace in the system of galvanized steel (what leaked) and
copper. I'm trying to decide whether to repipe the whole house, which is
going to be expensive and a pain, or not. My gut tells me to do it, but
thought I'd ask anyone who knows more about plumbing than I do, especially
in this sort of house, for advice on how to proceed.

Thanks,

Andy Barss