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Plumbing License Requirements. Plumbers licensing requirements for a journeyman and master plumbers license are usually determined at the state level and the necessary requirements and exams vary in each State. The enforcing & regulating of the state plumbing licensing requirements often fall under individual municipalities.
An individual holding a master electrician and master plumbing license must complete an approved continuing education course in electrical and plumbing. For the trades of plumbing, electrical, and HVAC, the course must be three hours in length.