Oklahoma Plumbing Exams

The Oklahoma Plumbing License Exam covers many topics including: Vents & Venting; Administrative Procedures; Fixtures; Drainage Systems and more.  Whether you live in Tulsa, Lawton, Oklahoma City or another city or county, the resources below will help you get started:

Need of a License:  Plumbing contractors and journeyman plumbers need a license to work in Oklahoma.

Who Grants a License:  Plumbing licenses are issued by the Oklahoma Construction Industries Board.

Procedures for Getting a License:   A candidate for a journeyman or master plumbing license must take and pass an exam. Before taking the exam, the candidate must be approved for examination.  Detailed information can be found in the Plumbing Exam Information sheet.

See also the PSI Candidate Information Bulletin.

Qualifications to receive a License:  A candidate for a plumbing contractor's license must have 4 years of plumbing experience while working for a licensed plumbing contractor.  A candidate for journeyman's license must verify 3 years of plumbing experience while employed by a licensed plumbing contractor.

How to Apply for the Test:  You can find the application for the journeyman or contractor license exam online at Application. Submit your application to the following address:

     Construction Industries Board

     2401 NW 23rd, Suite 5

     Oklahoma City , OK  73107

For more information, call (405) 271-5217.

After you have been approved for the exam, you can contact PSI to register to take the exam by calling (800) 733-9267 or online at www.psiexams.com.

Test Content:  The journeyman and contractor exams have the following specifications:

Plumbing Contractor and Gas  - 80 questions, 180 minute test, 75% to pass

Plumbing Journeyman and Gas - 80 questions, 180 minute test, 75% to pass

Content for both contractor and journeyman:

     General Plumbing - 10

     Piping, Valves and Control Valves - 8

     Fixtures and Equipment -8

     Water Supply- 5

     Drains and Sewers - 10

     Vents - 13

     Isometric Analysis - 7

     Traps, Interceptors, Indirect and Special Waste - 5

     Fuel Gas - 10

     Safety - 4

Who Administers the Test:  PSI

Fees:  There are fees to take the test.

License Renewal:  Licenses must be renewed every year.  Plumbers must take at least 6 hours of continuing education to renew a license.

Applicable Code:  Oklahoma follows the International Plumbing Code established by the International Code Council.  


For more information on licensing and exam preparation, go to Tests.com's

Journeyman Plumbing Test Guide

Master Plumbing Test Guide

And take Tests.com's Plumbing Practice Test.

For plumbing exam preparation products and services, such as study guides, practice tests, flashcards and courses, go to Tests.com's Journeyman Plumber Exam and Master Plumber Exam listings.