Washington Suburban Sanitary Commission (MD)
Master Plumber

Apply for the License

Washington Suburban Sanitary Commission (MD)
14501 Sweitzer Lane
Laurel, MD 20707
Phone: (301) 206-8588
Contractor Licensing Web Site

PSI Licensure: Certification
3210 E. Tropicana
Las Vegas, NV 89121
Phone: (800) 733-9267
Candidate Information Web Page

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Subject Areas	# of Questions
Administration	4
WSSC Water Meters	3
Site-Utility Systems	2
Trade Knowledge	2
Safety	4
Definitions	5
Math	5
Materials	4
Pipe Protection and Support	4
Structural Integrity	4
Tests and Inspections	4
Plumbing Fixtures and Appliances	5
Plumbing Facilities	2
Water Supply and Distribution	7
Backflow	5
Sanitary Drainage	8
Sanitary Vents	8
Traps and Interceptors	2
Storm Drainage	2

Total Number of Test Questions:	80
Time Allowed (hours):	3.0
Passing percentage:	70%

1.	WSSC Plumbing and Fuel Gas Code, 2007 Edition.
2.	International Residential Code for One- and Two-Family Dwellings, 2003, ICC.
3.	International Building Code, 2003, ICC.
4.	International Plumbing Code, 2006, ICC.
5.	International Residential Code for One- and Two-Family Dwellings, 2006, ICC.

1.	Fundamentals of Gas Appliances, International Approval Services. (Formerly AGA)
2.	Fundamentals of Gas Appliance Venting and Ventilation, International Approval Services. (Formerly AGA)
3.	Fundamentals of Gas Combustion, International Approval Services. (Formerly AGA)
4.	ASPE Data Book: Fundamentals of Plumbing Design, American Society of Plumbing Engineers.
5.	Heating, Ventilation and Air Conditioning Library (3 Volumes), Theodore Audel.
6.	Standard Plumbing Engineering Design, Louis S. Nielsen.
7.	NFPA 54: National Fuel Gas Code, 2006, NFPA.
8.	Commentary versions of each International Code Book, 2006, ICC.

We currently do not offer study materials for this trade
based on demand and the cost prohibitive nature of the reference books.

1-Nov-2009