100+ Free MT Journeyman Plumber Practice Questions

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2026 Statistics

Key Facts: MT Journeyman Plumber Exam

70%

Passing Score

MT Board of Plumbers

UPC 2021

Code Edition

Open-book exam

$270

Exam Fee

GITS

Written+Practical

Exam Format

Isometric component

The Montana journeyman plumber exam is unique in requiring both written and practical components. The written portion tests UPC 2021 knowledge in an open-book format. The practical portion requires reading and drawing isometric plumbing diagrams. The exam fee is $270 and a 70% score is required to pass.

About the MT Journeyman Plumber Exam

Montana requires both a written and practical (isometric drawing) exam for journeyman plumber licensure. The written exam is open book using the UPC 2021 and is administered by GITS on behalf of the Montana Board of Plumbers. Montana is one of few states with a practical isometric component.

Questions

100 scored questions

Time Limit

Written + Practical

Passing Score

70%

Exam Fee

$270 (Montana Board of Plumbers (GITS))

MT Journeyman Plumber Exam Content Outline

25%

Drainage, Waste & Vent Systems

UPC 2021 drainage pipe sizing, DFU calculations, slope requirements, cleanouts, and trap arm distances

20%

Venting Systems

Vent sizing, wet venting, AAVs, vent termination, circuit venting, and combination waste and vent

20%

Water Supply & Backflow Prevention

Water pipe sizing, WSFU calculations, backflow prevention, pressure regulation, and cross-connection control

15%

Gas Piping & Venting

Gas pipe sizing, BTUH calculations, pressure testing, combustion air, and appliance venting per UPC

20%

Fixtures, Code Admin & Isometric Drawings

Fixture installation, clearances, permits, inspections, isometric drawing interpretation, and Montana-specific rules

How to Pass the MT Journeyman Plumber Exam

What You Need to Know

Passing score: 70%
Exam length: 100 questions
Time limit: Written + Practical
Exam fee: $270

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

MT Journeyman Plumber Study Tips from Top Performers

1Practice reading and drawing isometric plumbing diagrams — Montana's practical exam tests this skill directly

2Master UPC 2021 drainage and vent sizing tables — these are heavily tested

3Learn to navigate the UPC index quickly — the open-book format rewards efficient code lookup

4Memorize DFU values for common fixtures and trap arm distances by pipe size

5Study UPC gas piping sizing tables and BTUH calculations for fuel gas appliances

6Review Montana-specific licensing requirements and Board of Plumbers regulations

Frequently Asked Questions

Does Montana's plumber exam have a practical component?

Yes, Montana is one of few states that requires both a written and practical exam. The practical portion tests your ability to read and draw isometric plumbing diagrams. Both components are administered by GITS on behalf of the Montana Board of Plumbers.

Is the Montana plumber exam open book?

Yes, the written portion of Montana's journeyman plumber exam is open book. You may bring the UPC 2021 codebook. No other references, notes, or electronic devices are permitted during the exam.

What plumbing code does Montana use?

Montana uses the Uniform Plumbing Code (UPC) 2021 edition published by IAPMO. The exam tests knowledge of UPC provisions including drainage, venting, water supply, gas piping, and fixture installation requirements.

How much does the Montana plumber exam cost?

The Montana journeyman plumber exam fee is approximately $270, which covers both the written and practical components. This fee is paid to GITS, the exam administrator.