Journeyman Plumber Practice Test

100 questions90 minutesDetailed explanationsInstant scoring

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About the Real Journeyman Plumber Exam

Journeyman plumber licensing exam covering code, systems, and installation. A strong, blueprint-matched practice run is one of the best predictors of how you will perform on the real exam.

Our Journeyman Plumber Practice Test

Our Journeyman Plumber practice test contains 100 original questions spanning Plumbing Code, Systems & Installation, Safety & Theory. Each question mirrors the real exam's style and difficulty and includes a detailed explanation, so every question teaches you something.

What to Expect

Plumbing Code: UPC/IPC, fixtures, venting, drainage, water supply.
Systems & Installation: Pipe sizing, materials, joints, backflow, gas.
Safety & Theory: Isometrics, math, codes, safety practices.

Try a Sample Question

Journeyman Plumber — Sample · easy

Under the Uniform Plumbing Code, what is the minimum trap seal depth required for a fixture trap?

A 2 inches

B 4 inches

C 1 inch

D 1/2 inch

Explanation. The UPC requires a trap seal of at least 2 inches to maintain an effective water barrier against sewer gases. A 1-inch or 1/2-inch seal would evaporate or be siphoned too easily, and 4 inches exceeds the standard maximum of 4 inches for a non-deep-seal trap.

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