200+ Free Journeyman Plumber Practice Questions
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Key Facts: Journeyman Plumber Exam
70%
Passing Score
Most states
50-60%
Pass Rate
Varies by state
90
Questions
Typical exam length
3-4 hrs
Time Limit
State-dependent
$75-150
Exam Fee
PSI/Prometric
2024/2026
IPC/UPC Edition
Check your state
The Journeyman Plumber exam has a 50-60% pass rate in most states. The exam requires 70% to pass and covers 5 content domains based on IPC/UPC codes. Most states allow code books during the exam but require thorough knowledge of pipe sizing, venting, and plumbing calculations. The exam tests both theory and practical applications including isometric drawings and DFU calculations.
About the Journeyman Plumber Exam
State licensing exam based on IPC/UPC plumbing codes covering drainage, waste, venting, water supply, and gas piping systems. Tests 5 content domains including plumbing code general knowledge, DWV systems, water supply, gas piping, and fixtures/equipment. Passing certifies competence to install, maintain, and repair plumbing systems under supervision.
Questions
90 scored questions
Time Limit
3-4 hours
Passing Score
70%
Exam Fee
$75-$150 (PSI / State Licensing Boards)
Journeyman Plumber Exam Content Outline
Plumbing Code & General Knowledge
IPC/UPC code structure, definitions, permit requirements, inspections, plumbing math, isometric drawings, materials standards, and general code compliance
Drainage, Waste & Vent (DWV) Systems
Drainage pipe sizing, fixture units (DFU), vent types and sizing, trap seal protection, cleanouts, slopes, and DWV installation requirements
Water Supply Systems
Water pipe sizing, WSFU calculations, backflow prevention, pressure requirements, water heaters, circulation systems, and cross-connection control
Gas Piping
Gas pipe sizing, pressure testing, appliance venting, combustion air requirements, gas leak detection, and fuel gas code compliance
Fixtures & Equipment
Fixture installation requirements, water closets, lavatories, bathtubs, showers, water heaters, sump pumps, ejectors, and special waste systems
How to Pass the Journeyman Plumber Exam
What You Need to Know
- Passing score: 70%
- Exam length: 90 questions
- Time limit: 3-4 hours
- Exam fee: $75-$150
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
Journeyman Plumber Study Tips from Top Performers
Frequently Asked Questions
How hard is the Journeyman Plumber exam?
The exam is moderately difficult with pass rates around 50-60% in most states. The exam requires knowledge of IPC or UPC codes, pipe sizing calculations, and venting requirements. Many candidates find the isometric drawing interpretation and DFU calculations challenging. Most states allow code books but the time limit requires efficient code navigation.
What is the passing score?
Most states require 70% to pass the Journeyman Plumber exam. Some jurisdictions may require 75%. The exam typically has 80-125 questions depending on the state, with most states using 90-100 questions.
Can I use code books during the exam?
Most states allow bound copies of the IPC or UPC during the exam. No loose papers, handwritten notes, or electronic devices are permitted. Some states provide code books while others require you to bring your own. Always check with your specific state board for approved reference materials.
What code edition is used?
Most states have adopted the 2024 IPC and UPC editions, though some may still use the 2021 editions. The 2026 editions are being adopted by some jurisdictions. Check with your state licensing board to confirm which code edition is used for your exam.
How many questions are on the exam?
Most state exams contain 80-125 questions depending on the jurisdiction. The most common format is 90-100 multiple-choice questions. The exam is typically split between code knowledge, calculations, and practical applications like isometric drawings.
What is a plumbing fixture unit (DFU)?
A Drainage Fixture Unit (DFU) is a measure of the probable discharge into the drainage system by various types of plumbing fixtures. One DFU equals approximately 7.5 gallons per minute of flow. DFU values are used to size drainage and vent piping systems. Different fixtures have different DFU ratings - for example, a water closet is typically 3-4 DFUs while a lavatory is 1-2 DFUs.