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Washington DC
(303) Master Plumber

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District of Columbia
Board of Industrial Trades

1100 4th St SW
Washington, DC  20024
Phone:  (202) 442-4400

Exam Administrator

PSI Services LLC
DCOPLA Program

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


Exam Content

Subject Areas% of
Plumbing Fixtures and Terminology7
Plumbing Fundamentals13
Traps, Cleanouts and Interceptors7
Special Requirements3
Drainage Requirements19
Vent Requirements17
Water Distribution11
Plan and Analysis23
Total number of test questions:
Time allowed (hours):

Books Allowed in the Exam

International Plumbing Code, 2012, ICC
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