WASHINGTON — Water and energy conservation can have some unintended consequences, a Virginia Tech professor told leaders of the plumbing industry at the Plumbing Industry Leadership Coalition meeting here in late April. Marc Edwards, informally known as the “plumbing professor,” has spoken before industry meetings before, which earned him the invitation to the PILC meeting. The Plumbing Industry Leadership Coalition is co-convened by the leaders of Plumbing Manufacturers ...

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