Wisconsin Plumbing Code: Wisconsin Plumbing Code (SPS 382, UPC-based) 2021

Wisconsin follows Wisconsin Plumbing Code (SPS 382, UPC-based) 2021 as the basis for plumbing work. Permits and inspections are issued by the local Authority Having Jurisdiction (AHJ), which may publish additional amendments.

Current plumbing code adopted in Wisconsin — edition, key amendments, permit and inspection guidance. Updated 2026.