Master Plumber VIP Certification Practice Exam

Master Plumber Exam — The Master Plumber license exam is administered by individual state licensing boards across the U.S. (commonly through PSI Exams or Pearson VUE) and typically consists of 80–100 questions over 3–4 hours with a 70–75% passing threshold, testing mastery of the International Plumbing Code (IPC) or Uniform Plumbing Code (UPC), pipe sizing, drainage systems, water supply, and safety standards.