Plumber licensing takes three distinct shapes in the US: some states license the individual plumber (journeyman and master paths), some license the plumbing contractor, and some leave licensing to cities or counties entirely. Each state page below states which shape applies — as read from the board’s own words — then covers the issuing board, license types, experience and exam requirements, fees, renewal cycles, and the statute or administrative code behind them. Coverage currently spans ten states — Texas, Illinois, Massachusetts, California, Florida, North Carolina, Ohio, Georgia, New York, and Pennsylvania — with the remaining states in progress. Every figure is verified against official sources and dated.