About this Massachusetts Journeyman Plumber prep
This prep is built specifically for the Massachusetts Journeyman Plumber examination and includes a 18,000+-word study guide written for this exam, 4 full-length practice exams and 480 practice questions, each with a written explanation.
The Massachusetts Journeyman Plumber is administered by Board of State Examiners of Plumbers and Gas Fitters CIB dated 10/3/2025 (PSI, maplu). Closed book, two parts, each part scored alone, pass valid one year. Journeyman Part I written: 80 questions, 70 percent, 160 minutes. Outline items: general regulations 9, gas piping equipment and appliances 21, venting 12, traps and cleanouts 2, fixtures 2, water heaters 3, piping valves and controls 3, water supply 6, hangers 2, DWV 13, separators 5, joints 2. Part II practical: 40 questions, 70 percent, 160 minutes (isometric 20, general trade calculations 5, gas piping 7, gas venting 8). Books used to write the exam are not allowed in the center, including 248 CMR 10.00-10.23 (2023), NFPA 54 2012, NFPA 58 2011, and MGL chapter 142. Exam fee $80. Not the master paper and not the gas-fitter 20/80. Part II is not a blended extra 40 on the written sitting.. This prep is written to that board’s current scope, not to a generic national syllabus.
The real Massachusetts Journeyman Plumber exam contains 80 questions, with a passing score of 70%. Our practice exams mirror that structure so the format is familiar before you sit it.
Topics covered
- Board of State Examiners, 248 CMR 11.00, and the PSI bulletin
- Official content outline — Part I Written (80 items, 70%, 160 minutes)
- Official content outline — Part II Practical (40 items, 70%, 160 minutes)
- 248 CMR 10.00 — how the Massachusetts plumbing code is built
- Plumbing math (Part II has 5 calculation items; Part I assumes the rest)
- General regulations, inspections, permits, M.G.L. c. 142 (9 items)
- Gas piping, equipment, and appliances (21 items) — the heavy Part I block
- Venting of gas appliances (Part I 12 items + Part II 8 items)
- Traps, cleanouts, fixtures, clearances (2 + 2 items)
- Water heaters and M.G.L. c. 142 (3 items)
- Piping, valves, controls, water supply, backflow, temperatures (3 + 6 items)
- Hangers (2) and joints (2)
- Drain, waste, and vent (13 items)
- Separators, interceptors, grease traps, holding tanks (5 items)
- Part II isometric analysis (20 items)
- Worked calculations
- Sample questions
- Mistakes that fail this exam
- Glossary
- Eight-week closed-book plan
How access works
You are paying for access length (30, 60, or 90 days). The study guide and four timed exams are the same on every term. Access starts when you enrol and works on any device for that term.
Not affiliated with or endorsed by any state licensing board or exam vendor. For exam-preparation purposes only.