Montana Plumbing Exams

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

Need of a License:  Journeyman and master plumbers need a license to work in Montana. 

Who Grants a License:  Plumbing licenses are issued by the Montana Board of Plumbers.  

Procedures for Getting a License:    Candidates for the journeyman and master plumber licenses must take an exam to obtain a license.   For detailed information about the exam, go to the website of the Gainesville Independent Testing Services.

How to apply:  You can find the application online at:



If using regular mail, send the completed application to:

     Montana Board of Plumbers

     PO Box 200513

     Helena, Montana 59620-0513

For personal delivery, take the application to:

     Montana Board of Plumbers

     301 South Park, 4th Floor

     Helena, Montana 59620-0513

You must get preapproved before taking the exam. For more information, call (406) 841-2329

Qualifications to take the Exam and receive a License :  Candidates to become journeyman or master plumbers must meet the following requirements:

     Journeyman - A candidate for journeyman plumber must 5 years and 7,500 hours of experience or completion of an apprentice program meeting the standards of the Montana Apprenticeship and Training Bureau or the U.S. Department of Labor, Bureau of Apprenticeship.

     Master - A candidate for master plumber must have 4 years of experience as a journeyman with 3 of the 4 years working either in a supervisory capacity or with a licensed master plumber.

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

     Journeyman - written and practical exam, 70 % to pass on each part. The written part has 100 questions and is 2 ½ hours long, open book.  The practical part includes a hands-on portion consisting of two parts, isometric drawings and a pressure loop that is limited to 4 hours.

     Master - 100 question written exam, 70 % to pass, 3 hour time limit, open book

Who Administers the Exam:  Gainesville Independent Testing Services

Fees:  There are fees to take the test.

License Renewal:  Licenses must be renewed every year.  Master and journeyman plumbers must take a minimum of 4 hours of continuing education courses.  The courses must be code-related and board approved.

Applicable Code:   Montana follows the Uniform Plumbing Code established by the International Association of Plumbing and Mechanical Officials.


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

Journeyman Plumbing Test Guide

Master Plumbing Test Guide

And take's Plumbing Practice Test.

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