Alaska Plumbing License: Requirements & How to Apply
How the Alaska plumbing license works: trainee and journeyman certificates of fitness, 8,000 hours, exams, fees, CE, reciprocity, and contractor rules.
North Dakota Plumbing License: Requirements & How to Apply
Get your North Dakota plumbing license: apprentice hours, journeyman and master exams, fees, CE, and reciprocity with MN, SD, and MT, in plain English.
South Dakota Plumbing License: Requirements & How to Apply
How to get a South Dakota plumbing license: apprentice to plumber to contractor, 1,900-hour years, exam scores, fees, CE, and reciprocity rules.
Delaware Plumbing License: How to Become a Master Plumber
How to get a Delaware plumbing license: master plumber experience routes, the ProV exam, $173 application fee, 5-hour CE, renewal, and reciprocity.
Rhode Island Plumbing License: How to Get Licensed in RI
How to get a Rhode Island plumbing license: apprentice hours, the 2018 IPC exam, $75 application fee, renewal costs, new CE rules, and reciprocity.
Montana Plumbing License: Journeyman to Master Guide
How to get a Montana plumbing license: journeyman and master hours, IAPMO exams, 2026 fees, renewal, CE and reciprocity, from official state sources.
Maine Plumbing License: Trainee to Master, Step by Step
How to get a Maine plumbing license: trainee, journeyman-in-training, journeyman and master hours, PROV exams, fees, renewal and reciprocity.
New Hampshire Plumbing License: Tiers, Hours, Exams & Fees
How to get a New Hampshire plumbing license: apprentice, journeyman and master rules, 8,000 hours, Prov exams, OPLC fees, CE and renewal.
Hawaii Plumbing License: PJ, PM and the C-37 Explained
Hawaii plumbing license requirements: 10,000 documented hours for a PJ, a separate C-37 contractor license to bid work, and no reciprocity at all.
West Virginia Plumbing License: The Two You Need
West Virginia plumbing license requirements: $75 plumber certification, 70% exam through Prov, plus a contractor license over $5,000 residential.