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: I was under the impression that lead could not legally be used even in the DWV system, because the lead leaches out and becomes an added burden at the treatment plant/ Any comments? Perhaps you are not aware of the pending toilet-to-tap recycling proposals out here on the left coast. Reply:
Lead bends are installed here frequently when undergound cast iron is used on new work or remodels/rehabs or to replace an existing bend in an apartment building, which is required in certain municipalities.
4# sheet lead is used as well for shower liners, (in addition to copper and membrane).
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