Plumbing Exam Study Guide
Prepare for your journeyman or master plumber licensing exam with free practice tests and study guides covering water supply, drainage, and plumbing code.
- 3 Topics
- Free, online
- Plain-English explanations
Curriculum Structure
3 modules
Module 1 Water Supply Systems
FreeStudy water supply systems for your plumbing exam. Covers pipe materials, sizing, backflow prevention, water heaters, and T&P relief valves.
Start with Module 1Module 2 Drainage and Vent Systems
FreeStudy drain, waste, and vent systems for your plumbing exam. Covers traps, pipe slope, venting methods, critical distance, and DWV sizing.
Module 3 Plumbing Code
FreeStudy plumbing code for your licensing exam. Covers UPC vs IPC, permit and inspection process, fixture requirements, cross-connection control, and ADA rules.
The Full Guide
The plumbing licensing exam tests your knowledge of water supply systems, drainage and vent systems, fixture installation, pipe sizing, and the applicable plumbing code. Most states require separate exams for journeyman and master plumber licenses, with the master exam covering more advanced sizing, design, and supervisory knowledge.
The Journeyman Plumber exam focuses on trade skills needed to perform plumbing work under the supervision of a licensed master plumber. Topics typically include supply piping materials and sizing, DWV (drain, waste, and vent) systems, fixture requirements, backflow prevention, and code compliance.
The Master Plumber exam covers the full scope of plumbing system design and installation, including advanced pipe sizing, water heater regulations, gas piping, medical gas, and the supervisory duties of a master plumber. Most states require a period of journeyman-level experience before a candidate may sit for the master exam.
ExamsLib provides free practice questions and study guides built around the subject areas most frequently tested on plumbing licensing exams, with clear explanations of the underlying code and trade principles.
This guide is for study purposes only. Always confirm current exam content and requirements with the official licensing authority in your state.
Frequently asked questions
What topics are covered on the journeyman plumber exam?
Most journeyman plumber exams cover water supply piping materials and sizing, drain-waste-vent (DWV) systems, fixture installation requirements, backflow prevention, and plumbing code compliance. Exact content varies by state.
What is the difference between a journeyman plumber and a master plumber?
A journeyman plumber is licensed to perform plumbing work under the supervision of a master plumber. A master plumber holds the highest license level, can design and oversee plumbing systems, pull permits, and supervise journeymen. Most states require documented journeyman experience before sitting for the master exam.
What plumbing code is used on licensing exams?
Most states use the Uniform Plumbing Code (UPC) or the International Plumbing Code (IPC), sometimes with state-specific amendments. Confirm which code and edition your state uses before purchasing study materials. The two codes differ in terminology, table values, and some installation requirements.
How many questions are on a typical plumbing licensing exam?
Exam length varies by state and license level. Many journeyman plumber exams contain 60 to 100 questions. Confirm the exact format with your state licensing authority and the approved testing provider.
Is the plumbing exam open book?
Some states allow candidates to use the plumbing code book during the exam, while others administer a closed-book test. Check with your state licensing board for the current rules before your exam date.
