Journeyman Plumber Test

Everything you need to prepare for the test.

Journeyman Plumber Test (2026)

Most states require Journeyman plumbers to be licensed by the state or local government to work as a plumber. Part of the licensing process consists of an exam for licensure to ensure that each applicant meets the state’s standards for public safety and consumer protection.

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Test Eligibility

Eligibility for licensure as a journeyman plumber varies depending on the state or local government where you plan to work. You will first need to determine whether your licensing authority regulates journeyman plumbers as trade licensees or as contractors, since this can affect the qualifications you must meet.

Most states and municipalities require you to prove that you have worked as an apprentice under the supervision of a licensed journeyman or master plumber for a certain amount of time. This time period will differ slightly, but most require at least one year. Some states or licensing agencies may require certain forms to be filled out by the supervising plumber to prove this. Other states may force you to complete an accredited apprenticeship program. This must be done before you apply for your license.

In most cases, the experience required for licensure can be met by either education and/or by working experience. This means that if you have completed a specific training program, the amount of time required for experience may be reduced.

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Journeyman Plumber Test Outline

The exams will vary depending on the state or municipality offering the licensure. However, most include around 100 multiple-choice and true/false questions. These are typically situation-based. In this type of question, you will be given some facts and answer the question based on those facts.

Exams are usually taken at a testing company location a few times a year. The test may be taken using a computer or may use paper and pencil, depending on your available testing sites.

They typically only test over trade knowledge and skills such as the following:

  • Storm drainage systems
  • Interceptors and traps
  • General knowledge and regulations
  • Venting
  • Water supply systems
  • Isometric analysis
  • Joints and connections
  • Hangers and supports
  • Backflow prevention
  • Plumbing fixtures
  • Septic and sewer
  • Drainage waste

However, some states or local areas may ask a few questions about the business and law aspects of the job. This is not typical unless the area regulates journeyman plumbers in terms of contractors.

It is a good idea to be prepared for these types of questions in case the exam includes questions about the following subjects:

  • Permitting
  • Insurance and bonding
  • Bidding process
  • Business management
  • Contracting
  • Worker safety
  • Environmental laws
  • Accounting and tax matters
  • Labor laws

Depending on the length of the test you will be given anywhere from two to five hours to complete it.

Test Registration

To register for this test, you must contact your state or local licensing authority. You will likely be asked to submit an application, which generally includes an application fee. You will also be required to pay an examination fee, the amount of which will vary depending on which state you take the test in.

How to Study

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Edited by Aaron Lanni

Aaron is the content manager and lead editor for Mometrix Academy. He regularly produces, updates, proofreads, and edits content to ensure it meets Mometrix’s quality and accessibility standards.

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by Mometrix Test Preparation | Last Updated: June 8, 2026