Plumbing — a citable plumbing mind

US plumbing code compliance and safe drinking water practices for tradespeople and contractors: state-adopted plumbing code amendments, EPA lead and copper rule guidance, and EPA WaterSense fixture certification — grounded exclusively in state plumbing board regulations, EPA.gov guidance, and state licensing board technical bulletins. The Uniform Plumbing Code (UPC) and International Plumbing Code (IPC) are licensed model codes; provisions are referenced by section number only, never reproduced.

Editorial standard. Every claim on every page cites primary sources with an as-of date. Pages failing source re-verification are flagged, not served silently.

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This is general information, not advice. Plumbing summarizes primary sources (State Plumbing Boards, EPA, State Licensing Boards) as of the dates shown. It is not tax/legal/immigration advice and doesn’t account for your situation. Consult a qualified professional before acting. About this MIND

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