- What Does AL-MP Stand For?
- Who Governs the AL-MP Credential
- Trade Examination Format and Rules
- What the 11 Domains Actually Cover
- The Separate Business Law Examination
- Fees, Application Fees, and Certificate Timeline
- Eligibility for In-State Applicants
- Renewal and Continuing Education
- Mapping a Study Plan to the AL-MP Domains
- Who Hires Master Plumbers Certified Under AL-MP
- Frequently Asked Questions
- AL-MP is the site identifier for the Alabama Master Plumber Exam, administered through Prov.
- The trade examination has 100 questions, runs 4.17 hours, and requires a 70% passing score.
- Starting January 1, 2026, a separate 40-question Business Law exam ($100) is required alongside the $160 trade exam.
- Applicants must obtain the Master certificate within 90 calendar days after passing both exams.
What Does AL-MP Stand For?
AL-MP stands for the Alabama Master Plumber Exam. It is not a generic industry abbreviation borrowed from another state or another trade - it is the specific site identifier used for the official Master Plumber trade examination administered on behalf of the Alabama Plumbers and Gas Fitters Examining Board. If you're preparing to sit for this exam, understanding exactly what the letters represent matters, because several unrelated credentials use similar-sounding acronyms in other industries. On this site, AL-MP refers only to the Alabama licensing pathway for plumbers seeking Master status.
For a broader definition-focused explainer, see What Is AL-MP? and AL-MP Meaning. If you want the certification framed as a credential rather than just an acronym, AL-MP Certification covers the bigger picture.
Who Governs the AL-MP Credential
The Alabama Plumbers and Gas Fitters Examining Board is the licensing authority behind the AL-MP designation. The Board contracts with the testing provider Prov to deliver the trade examination itself. Prov's bulletin dated December 15, 2025, along with the January 2026 Board application for in-state Master applicants, are the two documents that currently govern how the exam is structured, scheduled, and scored.
Because the Board periodically updates fee schedules, reference lists, and application rules, candidates should always cross-check the current Prov bulletin and Board application rather than relying on older editions. If you're unsure whether you meet the Board's baseline qualifications before registering, review AL-MP Requirements 2026: Eligibility, Prerequisites & How to Qualify first.
Trade Examination Format and Rules
The Master Plumber trade examination consists of 100 questions delivered in a computer-administered format, with a time limit of 4.17 hours. It is an open-book exam, but "open book" in this context has specific limits set by the Board - not a free-for-all with any material you want to bring.
- Permitted: approved trade references, permanent tabs, highlighting, and a simple four-function calculator.
- Permitted under Alabama-specific rules: pen-only margin notes, as long as they don't contain pre-worked calculations.
- Prohibited: movable tabs, Post-it notes, added photocopies, and practice-test books brought into the session.
Trade references drawn on for this exam include the 2021 IPC (International Plumbing Code) and 2021 IFGC (International Fuel Gas Code). Candidates can sit for the exam at a physical test center or through an eligible Examroom remote appointment, depending on availability and Board approval.
A passing score on the trade examination is 70%. For the exact scoring mechanics and what a 70% actually means in terms of questions answered correctly, see AL-MP Passing Score 2026: Exactly What You Need to Pass.
Key Takeaway
Bring only Board-approved references with permanent tabs and highlighting - movable tabs, sticky notes, and photocopies will get flagged during check-in, so prepare your materials in advance rather than the morning of the exam.
What the 11 Domains Actually Cover
The trade examination's 100 questions are distributed across 11 official domains, based on the Board's question allocations. These domains cover the trade examination only - the separate Business Law exam is scored independently and isn't part of this breakdown. Sizing and Design and System Installation carry the largest share of questions, meaning they deserve proportionally more study time than domains with fewer allocated items.
Domain 3: Sizing and Design
One of the two largest domains. Expect questions on pipe sizing methodology, load calculations, and system design logic drawn from the 2021 IPC and 2021 IFGC.
- Practice sizing problems using the exact code editions listed for this exam
Domain 4: System Installation
The other largest domain. Covers correct installation sequencing, code-compliant methods, and practical judgment calls a working Master plumber makes on a job site.
- Focus on installation scenarios, not just terminology memorization
The remaining nine domains - General Knowledge, Drawings and Plan Reading, Trade Math, Tools, Water Heaters, Roof Drain Systems, Fixtures and Fittings, Drain Waste and Vents, and Safety - round out the exam with smaller but still meaningful question shares. For a full breakdown of every domain, including how each connects to real trade tasks, see AL-MP Exam Domains 2026: Complete Guide to All 11 Content Areas.
| Domain | Relative Weight |
|---|---|
| Sizing and Design | Largest |
| System Installation | Largest |
| General Knowledge, Drawings and Plan Reading, Trade Math, Tools, Water Heaters, Roof Drain Systems, Fixtures and Fittings, Drain Waste and Vents, Safety | Remaining share of the 100 questions |
The Separate Business Law Examination
Beginning January 1, 2026, Master applicants must also pass a separate Business Law examination. This is not part of the 100-question trade exam - it's a distinct 40-question test with a 2-hour time limit and its own 70% passing score. The Business Law exam costs $100, which combines with the $160 trade exam fee for a total of $260 in examination fees.
Only a failed examination needs to be repeated - if you pass the trade exam but fail Business Law (or vice versa), you don't need to retake the one you already passed. This matters for planning your study time and budgeting for potential retakes.
Fees, Application Fees, and Certificate Timeline
The full cost of becoming a Master plumber under AL-MP involves several distinct line items, and mixing them up is a common mistake. Here's how they break down:
- $160 - trade examination fee
- $100 - Business Law examination fee (required from January 1, 2026)
- $260 - combined examination fees
- $50 - initial application processing fee (separate from exam fees)
- $175 - initial Master certificate fee
Once you pass both required examinations, you must obtain the Master certificate within 90 calendar days. Missing this window can create complications with your eligibility, so treat it as a hard deadline rather than a soft guideline. For a complete line-item cost breakdown and how these fees compare to other pathways, read AL-MP Certification Cost 2026: Complete Pricing Breakdown. If you're still mapping out when to register and test, AL-MP Exam Dates 2026: Testing Windows, Deadlines & Scheduling lays out the scheduling mechanics.
Eligibility for In-State Applicants
In-state applicants pursuing the Master Plumber exam under this outline need:
- A current Alabama certificate
- At least one year of current, verifiable journeyman work experience
- Board approval of the application
- Lawful-presence documentation
These requirements come directly from the January 2026 Board application for in-state Master applicants. If any of these pieces are missing or unclear for your situation, it's worth reading the full eligibility breakdown at AL-MP Requirements 2026: Eligibility, Prerequisites & How to Qualify before you pay any fees.
Renewal and Continuing Education
Once you're certified, Master certificates renew annually for $175 during the window of October 1 through December 31. Renewal isn't automatic - you also need to complete continuing education.
The Board requires four approved CE hours annually, subject to Board exemptions. The split depends on what you hold:
- Plumber-only certificate holders need four plumbing CE hours
- Dual plumbing/gas certificate holders split the four hours between the two trades
For 2027 certification specifically, CE must be completed and submitted before November 1, 2026, with renewal happening during the October 1-December 31, 2026 window. Missing either deadline can jeopardize your active status, so mark both dates well ahead of time.
Mapping a Study Plan to the AL-MP Domains
Rather than studying every domain equally, allocate time proportional to how heavily each domain is weighted on the actual 100-question exam. Since Sizing and Design and System Installation are the largest domains, they should anchor your earliest and most repeated study sessions - not be treated as "review later" topics.
Sizing and Design + System Installation
- Work through 2021 IPC and 2021 IFGC sizing tables
- Practice full installation scenarios, not isolated facts
Trade Math, Drawings and Plan Reading, Water Heaters
- Drill calculations using only a simple four-function calculator, since that's what's allowed on exam day
- Practice reading plan sets under time pressure
Remaining domains + full timed practice
- Cover Tools, Roof Drain Systems, Fixtures and Fittings, Drain Waste and Vents, Safety, and General Knowledge
- Simulate the 4.17-hour, 100-question format under open-book conditions
A short spaced-repetition pass on code references and terminology in the final week can help lock in the smaller domains without derailing your focus on the two heavyweight topics. For a structured, exam-specific version of this plan, see the AL-MP Study Guide 2026: How to Pass on Your First Attempt, and use our practice tests to simulate the open-book, timed format before test day. For a candid look at how challenging the exam tends to be for most candidates, check How Hard Is the AL-MP Exam? Complete Difficulty Guide 2026.
Who Hires Master Plumbers Certified Under AL-MP
Holding an active Alabama Master Plumber certificate typically opens doors with plumbing contractors, mechanical contracting firms, and businesses that need a licensed Master on staff to pull permits or supervise journeyman crews. Because the credential requires verifiable journeyman experience and Board approval before you even sit the exam, employers generally treat it as evidence of both technical competency and regulatory standing in the state.
If you're evaluating whether pursuing this certification lines up with your career goals, Is the AL-MP Certification Worth It? Complete ROI Analysis 2026 and AL-MP Salary Guide 2026: Complete Earnings Analysis go deeper into that question. For active openings and how certified Master plumbers typically position themselves in the job market, see AL-MP Jobs. If you want to strengthen your technical foundation before testing, AL-MP Training outlines preparation options.
Frequently Asked Questions
AL-MP stands for the Alabama Master Plumber Exam, the official trade examination required by the Alabama Plumbers and Gas Fitters Examining Board for Master Plumber certification.
No. AL-MP refers to the 100-question trade examination. The Business Law examination is a separate 40-question test required from January 1, 2026, with its own fee and passing score.
The trade examination has 100 questions and a time limit of 4.17 hours. It is computer-administered and open book, with a required passing score of 70%.
You must obtain your Master certificate within 90 calendar days after passing both the trade examination and the Business Law examination.
Sizing and Design and System Installation carry the largest share of the 100 questions, so they warrant the most study time relative to the other nine domains.
Understanding exactly what AL-MP stands for - and separating it clearly from other credentials that share the same letters - is the first step toward preparing correctly. From here, dig into the domain-by-domain breakdown, confirm your eligibility, and build a study plan that reflects how the Board actually weights the exam.