📝 Full-Length Practice Exam

Master Plumber License

Administered by State / local board (often via PSI/Prometric)

5 free / 50
Questions
240 min
Time limit
70%
Pass mark
Open-reference
References
🔓 Free preview, then unlock

The first 5 questions are free. To finish all 50questions with full scoring, a topic breakdown, and answer explanations, you'll unlock the rest with the All-Access Pass.

What this is

Practice exam for the Master Plumber License, the senior plumbing credential that authorizes supervision of journeymen, system design, and (in many jurisdictions) holding a contractor's qualification. It emphasizes advanced code interpretation, design and sizing, backflow protection, code administration, and business law.

References you may use
  • Uniform Plumbing Code (UPC)
  • International Plumbing Code (IPC)
  • International Fuel Gas Code (IFGC)
Topics covered
Advanced Code ApplicationSystem Design & SizingBackflow & Cross-ConnectionCode AdministrationBusiness & Law
📊 What you get at the end
  • Your overall score and a clear pass/fail result against the 70% pass mark — instantly, no waiting
  • A performance breakdown by topic, so you can see exactly which areas need more study
  • Every question reviewed afterward with the correct answer and a full explanation — including the ones you missed
⚠️ These are original practice questions modeled on the topics and difficulty of master plumber licensing exams; they are NOT reproductions of any real exam items. Code editions, amendments, and licensing requirements vary by jurisdiction and change over time, so always verify current rules with your state or local plumbing board before relying on any answer.
EngineersUniverse is an independent educational publisher and is not affiliated with, endorsed by, certified by, or sponsored by State / local board (often via PSI/Prometric) or any other organization named on this page.Master Plumber and any other credential names referenced are trademarks of their respective owners, used here solely to identify the exam this practice test is modeled on. See our full disclaimer.

The timer starts when you begin. No payment required to try the first 5 questions.