Montana Journeyman Plumber Exam Prep

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Montana Journeyman Plumber exam at a glance

The Montana Journeyman Plumber exam has 100 questions and a time limit of 3 hours, and it is open book. That works out to about 1.8 minutes per question. Figures are from the licensing board’s published exam information, checked October 11, 2026.

Questions100
Time3 hours
BookOpen book

Confirm question count, time, open-book rules, and passing score on the live board bulletin before you sit. We do not guarantee a passing result. Source: MT Board of Plumbers exam sheet Rev. 01/09/2023; ARM 24.180.407(2) eff. 2026-04-11; IAPMO Montana catalog read 2026-10-11, checked October 11, 2026. How we source exam facts

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What’s included

19,000+ word study guide

Worked calculations, code-section breakdowns, exam traps, a key-terms glossary and a 30/60/90-day plan.

4 full-length practice exams

Original questions weighted to match the topic mix of the real exam.

400 practice questions

Every one with a written explanation and the code section behind the answer.

Same study guide and four exams on every term. You are choosing how long you can log in.

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What this prep covers

  1. About the Montana Journeyman Plumber license
  2. How Montana licensing and the exams work
  3. Plumbing math and fundamentals
  4. How the plumbing code is organized
  5. Sanitary drainage, waste, and vent (DWV)
  6. Venting
  7. Water supply and distribution
  8. Fixtures, traps, and interceptors
  9. Water heaters and relief valves
  10. Fuel gas piping
  11. Backflow prevention and cross-connection control
  12. Fixtures required by occupancy, clearances, and accessibility
  13. Materials, joining, supports, and storm drainage
  14. Inspection, testing, and drawings
  15. Worked calculations
  16. Sample exam questions, solved
  17. Common mistakes and exam traps
  18. Key chapters and tables to find fast
  19. Glossary of must-know terms
  20. Your 30 / 60 / 90 day study plan
  21. Exam-day strategy

Montana Journeyman Plumber licensing, explained

About the Montana Journeyman Plumber license

Montana licenses plumbers through the Montana Board of Plumbers in the Department of Labor and Industry. The Journeyman Plumber license is the working plumber's license; the Master Plumber license is a separate license with its own 125-question written exam. You earn the journeyman license by meeting the board's experience requirement and by passing the board's examinations. Under ARM 24.180.407(2), that now means two written examinations at 70 percent or better on each, with the first passed before the second. The experience, application, and scope rules sit in the Statutes and Rules Relating to the Board of Plumbers and Building Codes, which is also half of the exam's stated content, so read them in the packet rather than from a summary.

Your exam is built on the Uniform Plumbing Code (UPC), published by IAPMO, in the 2021 edition as amended in Montana. The International Plumbing Code (IPC), published by the ICC, is a different model code. It is not the code on this exam, and its tables, fixture-unit values, slopes, cleanout rules, and clearances differ from the UPC in ways the exam tests. Much of the free study material online is written to the IPC. When a number you remember does not match the 2021 UPC page in front of you, the page wins.

Plumbing protects public health. The exam returns again and again to the two core purposes of the code: deliver safe potable water in enough quantity and pressure, and remove waste without contaminating that water or letting sewer gas into the building. When two answers both look plausible, the one that better protects the potable supply or the trap seal is usually the code answer.

This is the opening of the full study guide. The complete guide continues into code navigation, worked calculations and solved exam questions.

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Common questions about this exam

How many questions are on the Montana Journeyman Plumber exam?

The Montana Journeyman Plumber exam has 100 questions and a time limit of 3 hours, about 1.8 minutes per question. It is open book. Check the current board bulletin before you book.

How much practice does this prep include?

It includes 4 full-length practice exams and 400 practice questions in total. Every question has a written explanation naming the code section the answer comes from.

How long is the study guide?

The Montana Journeyman Plumber guide runs to roughly 19,813 words in 21 sections, starting with “About the Montana Journeyman Plumber license” and ending with “Exam-day strategy”.

How long do I get access?

Choose 30, 60 or 90 days at checkout. Your days do not start at checkout: they begin the first time you open the course (or 14 days after purchase, whichever comes first). Access works on any device, and you can retake every practice exam as often as you like. Days remaining are shown in your dashboard and you can extend at any time.

Is this an official Montana Journeyman Plumber exam?

No. This is independent preparation material. It is not affiliated with or endorsed by any state licensing board or exam vendor, and it does not contain real exam questions. Always confirm current requirements with your licensing board.

About this prep

This prep is built specifically for the Montana Journeyman Plumber examination and includes a 19,000+-word study guide written for this exam, 4 full-length practice exams and 400 practice questions, each with a written explanation.

How access works

You are paying for access length (30, 60, or 90 days). The study guide and four timed exams are the same on every term. Your days start the first time you open the course, not at checkout (or 14 days after purchase, whichever comes first), and access works on any device for that term.

Not affiliated with or endorsed by any state licensing board or exam vendor. For exam-preparation purposes only.