Construction Trade Exam Research Area

Master Plumber / Gas Fitter

Apply for the License

Maryland State Board of Plumbing ™
500 N. Calvert St, Room 302
Baltimore, MD  21202
Phone: (410) 230-6314
Contractor Licensing Web Site

Exam Administrator

PSI Licensure: Certification ™
3210 E. Tropicana
Las Vegas, NV  89121
Phone:  (800) 733-9267
Candidate Bulletin Link

Exam Type


Exam Content

Subject Areas# of
Plumbing Fundamentals and Safety 5
Materials, Uses and Specifications 6
Traps, Interceptors and Backwater Valves 4
Plumbing Fixtures, Fixture Fittings
and Plumbing Appliances
Water Supply Systems 8
Backflow Prevention 10
Drain, Waste and Vent Systems 13
Special Topics 3
Gas Appliances and Piping 40
Plumbing Mathematics 7

Total number of test questions: 100
Time allowed (minutes): 240


Books Allowed in the Exam


National Standard Plumbing Code, 2015, PHCC

Buy from Publisher
2. NFPA 54: National Fuel Gas Code, 2015, NFPA Buy at Amazon
3. Mathematics for Plumbers and Pipefitters, 8th Edition, Lee Smith Buy at Amazon
4. Any standard backflow text  
5. Code of Federal Regulations - 29 CFR Part 1926 (OSHA), GPO [or] (OSHA) Selections by PSI Buy from Publisher
Study materials are currently NOT available for this exam

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