Plumber License Requirements in Wisconsin
License RequiredLast verified March 9, 2026
Agency And Exam
Issuing agency: Wisconsin Department of Safety and Professional Services
Official licensing agency website
Exam provider: PSI
Reciprocity And License Levels
License levels
Plumbing ApprenticeJourneyman PlumberMaster PlumberPlumbing Contractor
Reciprocity states
None listed
Notes
Wisconsin licenses plumbers through the Department of Safety and Professional Services. The official profession pages provide licensing materials for apprentices, journeyman plumbers, master plumbers, plumbing contractors, and restricted plumbing credentials. Verified against Wisconsin plumbing licensing materials on 2026-03-09.