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What Is a Master Plumber? A master plumber is a licensed plumbing professional who has passed a state's rigorous testing and certification process for plumbers. To earn this designation, a plumber has to not only pass the tests but accumulate years of practical experience in the plumbing and pipefitting field.
A first step toward becoming a master plumber is to earn an associates degree or complete a vocational program at a technical school. Classes include industrial math, chemistry and mechanical drawing courses in addition to plumbing basics. Skills include identifying pipes and reading blueprints.