Licensing Exams by Trade Name - Home Link

Master Plumber (Part 1)

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Commonwealth of Massachusetts
Board of Plumbers and Gas Fitters

1000 Washington Street, Suite 710
Boston, MA  02118
Phone:  (617) 727-9952
Licensing Web Link

Exam Administrator

PSI Licensure: Certification
3210 E. Tropicana
Las Vegas, NV  89121
Phone:  (800) 733-9267
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Exam Type


Exam Content

The exam content shown below only lists main category headings.  Please consult the PSI exam bulletin from the button below for more detailed information about subject sub-categories.

Part 1 - Written Portion
Subject Areas# of
General Regulations, Inspections, and Permits9
Gas Piping, Equipment, and Appliances21
Traps and Cleanouts2
Fixtures, Equipment, and Clearances2
Water Heaters3
Piping, Valves, Controls3
Water Supply6
Hangers and Supports2
Drain, Waste, and Vent13
Separators, Interceptors, and Grease Traps5
Joints and Connections2
Total number of test questions:
Time allowed (minutes):
Part 2 - Practical Portion
Subject Areas# of
Isometric Analysis20
General Trade Calculations5
Gas Piping7
Gas Venting8
Total number of test questions:
Time allowed (minutes):

Books NOT Allowed in the Exam

Massachusetts 248 CMR 3.00, General Provisons Governing the Conduct of Plumbing and Gas Work Performed in the Commonwealth
Web Page Link
Massachusetts 248 CMR 4.00, Massachusetts Fuel Gas Code
Web Page Link
Massachusetts 248 CMR 5.00, Amendments to NFPA 54
Web Page Link
Massachusetts 248 CMR 7.00, Large Gas Utilization Equipment
Web Page Link
Massachusetts 248 CMR 8.00, Amendments to NFPA 58
Web Page Link
Massachusetts 248 CMR 10.00-10.23, Uniform State Plumbing Code
Web Page Link
Massachusetts 248 CMR 11.00, Education and Experience Standards and Requirements for Licensure
Web Page Link
NFPA 54: National Fuel Gas Code, 2012, NFPA
Buy at Amazon
NFPA 58: Liquefied Petroleum Gas Code, 2011, NFPA
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Massachusetts MGL Chapter 142: Supervison of Plumbing
Web Page Link

NOTE:  The PSI bulletin is in error.  The correct statute for the amendments to NFPA 58 is CMR 8.00 (not 6.00).

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NFPA Fire & Gas Standard
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