Allegheny CountyAll master plumbers must be registered with the Allegheny County Health Department. Only Registered Master Plumbers who possess a current plumbing license or owner/occupant of an existing single family dwelling may apply for a plumbing permit. Plumbing permits are required to construct, enlarge, alter, repair, move, demolish or change occupancy of a building or structure. **NOTE:** At present, the list of active plumbers is being generated from inspection records, so if an active plumber hasn't had any work inspected since July 30, their name won't appear in the Plumbers table. ___Support for Health Equity datasets and tools provided by [Amazon Web Services (AWS)](https://aws.amazon.com/) through their [Health Equity Initiative](https://aws.amazon.com/government-education/nonprofits/global-social-impact/health-equity/).___allegheny-county-plumbersengWestern Pennsylvania Regional Data Center Open DataPublicHealthAllegheny County PlumbersDatasetsPennsylvania--Allegheny CountyPennsylvaniaLast Modified: 2026-03-30