How Hard is the Journeyman Plumber Test?

Plumbing Admin March 6, 2025

Introduction

The journeyman plumber test is a critical step for those looking to advance their plumbing careers. This exam assesses a candidate’s knowledge of plumbing codes, installation procedures, safety regulations, and troubleshooting skills. Many aspiring plumbers find it challenging due to the breadth of knowledge required, but with proper preparation, passing is achievable. In this guide, we’ll explore the difficulty of the test, what to expect, and tips for success.

Also Read: Distinctions Between Field Technician II and Field Technician III

1. Understanding the Journeyman Plumber Test

The test is designed to evaluate a plumber’s ability to work independently while adhering to local and national plumbing codes. It typically covers:

Plumbing Codes (International Plumbing Code, Uniform Plumbing Code, or local regulations)
Blueprint Reading and Pipe Sizing
Drainage, Waste, and Vent Systems
Water Supply Systems
Gas Piping and Fuel Systems
Plumbing Math and Calculations
Safety and OSHA Regulations

Each state or licensing authority may have different exam formats and passing scores.

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2. How Difficult is the Exam?

The difficulty of the journeyman plumber test depends on several factors:

A. Amount of Study and Preparation

Many candidates find the exam challenging because it requires a strong understanding of plumbing theory and real-world application.
Those who have hands-on experience and study the plumbing code thoroughly tend to perform better.

B. Exam Format and Time Limits

Some tests have multiple-choice questions, while others include written or practical components.
Time constraints can add pressure, especially if the exam includes complex calculations.

C. Depth of Plumbing Knowledge Required

The test doesn’t just assess basic plumbing skills; it also covers advanced topics like system design, troubleshooting, and local regulations.
Understanding blueprint reading and calculations for pipe sizing can be particularly challenging for some test-takers.

D. State and Local Differences

Some states have more rigorous exams than others.
Candidates should review their specific state’s exam content and requirements.

3. How to Prepare for the Journeyman Plumber Test

A. Study the Plumbing Code

Get a copy of the International Plumbing Code (IPC) or Uniform Plumbing Code (UPC), depending on your state’s requirements.
Understand key regulations for drain, waste, and vent systems, water supply, and gas piping.

B. Use Exam Prep Books and Practice Tests

Many study guides and online courses are available to help with exam preparation.
Take timed practice exams to get familiar with the question format and manage time effectively.

C. Gain Hands-On Experience

The more real-world plumbing work you have done, the easier it will be to answer scenario-based questions.
Apprenticeship training plays a crucial role in reinforcing the knowledge needed for the exam.

D. Focus on Plumbing Math

Brush up on calculations for pipe sizing, pressure loss, and fixture unit loads.
Understanding these concepts can help in both multiple-choice and practical exam sections.

E. Join a Study Group or Take a Class

Learning from experienced plumbers or instructors can help clarify difficult topics.
Many trade schools and local plumbing associations offer exam prep courses.

4. What Happens if You Fail?

If you don’t pass the exam on the first attempt:

Review the areas you struggled with and focus on those topics.
Check your state’s retake policy—most states allow retakes after a waiting period.
Consider additional training if certain topics were particularly challenging.
Take more practice tests to improve time management and familiarity with the questions.

5. Final Thoughts

The journeyman plumber test is challenging but manageable with proper preparation. Understanding plumbing codes, practicing calculations, and gaining hands-on experience are key to passing. By studying effectively and using the right resources, candidates can improve their chances of success and advance in their plumbing careers.

Would you like recommendations for specific study guides or online courses to help with preparation?