Quote:
Originally Posted by somegirl114
apparently they can't put pvc underground because the soil erodes the pvc. (correct me if i'm worng, that's what the plumber said.)
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I believe it's because of a city ordinance likely put in place at the behest of the building trades unions. PVC pipes may have a shorter life-span than cast iron (I don't know if they do), but they aren't eroded by soil, that I'm aware of, unless maybe the weight of the soil might crack them.
Somebody who knows more feel free to chime in.