- What Is WI-JP Certification?
- Who Issues It and Who Needs It
- Exam Structure: Part 1 and Part 2
- Eligibility Pathways
- Registration, Testing Locations, and Fees
- What's Permitted in the Exam Room
- What You'll Actually Be Tested On
- Building a Study Plan Around the Two Parts
- After Passing: Renewal and Supervision Rules
- FAQ
- WI-JP (class code 7630) is issued by the Wisconsin DSPS and covers two separate exam parts, not one continuous test.
- Part 1 has 87 questions in three hours; Part 2 has 120 questions in three hours - 207 questions total.
- Both parts are open book and require a 70% passing score on each part.
- Pearson VUE testing costs $90 per part ($180 total); DSPS application fees are billed separately through LicensE.
What Is WI-JP Certification?
WI-JP is shorthand for the Wisconsin Journeyman Plumber License Exam, the credentialing test administered under the Wisconsin Department of Safety and Professional Services (DSPS) for the full journeyman plumber license, class code 7630. Passing this exam - combined with meeting DSPS eligibility requirements - is what allows a plumber to legally work as a journeyman in Wisconsin under the supervision structure the state requires.
Unlike a single-sitting licensing test, WI-JP is really two connected exams: Part 1 and Part 2. Candidates who understand this structure going in tend to prepare far more efficiently than those who treat it like a one-shot test. If you're just getting oriented, the What Is WI-JP? overview and the WI-JP Meaning breakdown are good companion reads before you dig into logistics.
Who Issues It and Who Needs It
The Wisconsin DSPS owns the credential, sets eligibility rules through its LicensE system, and determines which testing route candidates may use. Candidates can sit at DSPS examination locations or, once DSPS approves eligibility, schedule through Pearson VUE's computer-based testing network.
Who actually needs this? Anyone pursuing full journeyman plumber licensure in Wisconsin - typically apprentices finishing a recognized program, out-of-state apprenticeship graduates seeking Wisconsin licensure, and experienced out-of-state journeyman plumbers pursuing the comity route. Employers hiring for journeyman-level plumbing work - residential contractors, commercial mechanical firms, municipal utilities, and POWTS (private onsite wastewater treatment system) installers - expect this license as a baseline credential. For a deeper look at how eligibility maps to career entry, see WI-JP Requirements 2026 and WI-JP Jobs.
Exam Structure: Part 1 and Part 2
Both parts are administered as separate testing sessions, and the DSPS checklist is explicit about the split:
- Part 1: 87 questions, three-hour time limit.
- Part 2: 120 questions, three-hour time limit.
- Combined: 207 questions across six hours, delivered as two independent sittings - not one uninterrupted exam.
Both parts use an open-book format, and both require a 70% score to pass. Because passing is evaluated per part, a strong Part 1 score cannot offset a weak Part 2 score - each part stands on its own. This is one of the most misunderstood pieces of WI-JP logistics, and it's worth internalizing before you build a study calendar. The WI-JP Passing Score 2026 guide walks through exactly what a 70% threshold means for each part in practical terms.
| Feature | Part 1 | Part 2 |
|---|---|---|
| Question count | 87 | 120 |
| Time limit | 3 hours | 3 hours |
| Format | Open book | Open book |
| Passing standard | 70% | 70% |
| Pearson VUE fee | $90 | $90 |
Key Takeaway
Treat Part 1 and Part 2 as two separate exams that each need their own pass, their own reference-binder prep, and their own scheduling slot - not as halves of one long test.
Eligibility Pathways
DSPS eligibility is required before you can schedule either part, whether through a DSPS testing location or Pearson VUE. There are a few recognized routes into eligibility:
Standard Apprenticeship Route
Completion of a recognized plumbing apprenticeship program satisfies standard eligibility for the journeyman exam.
- Program must be DSPS-recognized
- Applies to most in-state candidates
Out-of-State Apprenticeship Route
Candidates trained outside Wisconsin can qualify through a five-year apprenticeship program that includes at least 576 hours of related instruction.
- Five-year program minimum
- 576+ hours of related instruction documented
Comity Route
Experienced out-of-state journeyman plumber licensees may qualify through a comity pathway described in the DSPS application materials, rather than repeating an apprenticeship from scratch.
- Designed for licensees relocating to Wisconsin
- Requires verification of existing journeyman licensure
For the full eligibility checklist, including documentation DSPS expects at application time, see WI-JP Requirements 2026.
Registration, Testing Locations, and Fees
Once DSPS approves eligibility through LicensE, candidates choose between a DSPS examination location or Pearson VUE computer-based testing. This choice matters more than it might seem:
Pearson VUE administers the Wisconsin plumbing exams only at a fixed set of centers: Eau Claire, Madison, Brookfield, Kenosha, Ashwaubenon, and Milwaukee. If you don't live near one of these six cities, factor travel time into your scheduling plan well before your eligibility window opens.
On fees: Pearson VUE charges $90 per part, for a combined $180 in examination fees across both parts. Application and credential fees are separate and handled through DSPS's LicensE system, not through Pearson. Passing results are valid for one year, and if you need a retake through Pearson, DSPS eligibility must be re-approved before you can reschedule. For the complete fee breakdown including renewal costs, see WI-JP Certification Cost 2026, and for scheduling windows, check WI-JP Exam Dates 2026.
What's Permitted in the Exam Room
Because both parts are open book, knowing exactly what you can bring - and how it must be organized - is as important as knowing the code itself. DSPS permits exactly nine reference items:
- One binder containing Wisconsin Statutes chapters 145 and 106, SPS 305, SPS 381-387, SPS 302, SPS 325, and printed notes
- NFPA 13D (2019)
- NFPA 24 (2019)
- At-Grade Pressure Distribution Component Manual
- Holding Tank Component Manual
- In-Ground Soil Absorption Component Manual
- Mound Component Manual
- Pressure Distribution Component Manual
- Multi-Purpose Piping Systems Design Manual
Printed personal notes are allowed only if they're three-hole-punched and placed inside the binder - loose papers aren't permitted. Practice exams or previous exam copies, removable tabs, sticky notes, and paperclips are all prohibited in the testing room. Tabs that come pre-installed on bound code books, along with three-ring paper dividers with tabs, are allowed, and architect/engineer scale rulers are permitted as well.
Key Takeaway
Build your binder exactly the way DSPS describes it weeks before test day - scrambling to punch holes and organize tabs the night before costs you study time you don't have.
What You'll Actually Be Tested On
WI-JP doesn't publish domain-percentage weightings the way some certification exams do - the exam parts and the reference titles listed above are not broken into topical percentages. Instead, the practical way to prepare is to organize your studying around the state-code and POWTS (private onsite wastewater treatment system) references themselves, since those are the materials both the exam and your open-book binder are built on.
That means candidates should expect questions that draw directly from:
- Wisconsin Statutes chapters 145 and 106 as they apply to plumbing licensure and practice
- SPS 305 (plumbing code administration and general provisions)
- SPS 381-387 (POWTS-related administrative code chapters)
- SPS 302 and SPS 325 (plumbing product and system requirements)
- NFPA 13D (2019) and NFPA 24 (2019) fire protection and water supply standards
- POWTS component manuals: at-grade pressure distribution, holding tank, in-ground soil absorption, mound, and pressure distribution systems
- Multi-Purpose Piping Systems Design Manual content
Because the exam draws from these specific references rather than generic plumbing trivia, the most efficient prep strategy is to drill each reference document individually rather than study "plumbing" broadly. For a structured breakdown of how these topics map across both parts, see WI-JP Exam Domains 2026: Complete Guide to All Content Areas.
POWTS Component Manuals
Five separate manuals cover distinct onsite wastewater system types. Candidates often underestimate how much Part 2 content draws from these.
- Know which manual applies to which system design
- Practice locating specific installation specs quickly under time pressure
State Code Binder (SPS Chapters)
SPS 305, SPS 381-387, SPS 302, and SPS 325 form the backbone of the required binder. Familiarity with section numbering saves critical minutes during the exam.
- Tab your binder by SPS chapter, not alphabetically
- Practice finding definitions and requirements without flipping randomly
Building a Study Plan Around the Two Parts
Because WI-JP splits into two separately-timed, separately-scored parts, the smartest scheduling approach is to prepare for Part 1 and Part 2 in dedicated blocks rather than mixing all references together. A simple two-phase structure works well:
Part 1 Focus
- Drill Wisconsin Statutes chapters 145 and 106, plus SPS 305, SPS 302, and SPS 325
- Time yourself against the 87-question, 3-hour format
- Practice locating sections in your binder under a clock
Part 2 Focus
- Work through SPS 381-387 and each POWTS component manual
- Review NFPA 13D and NFPA 24 (2019 editions) provisions likely to appear
- Simulate the 120-question, 3-hour session with your organized binder
Short, timed practice sessions with your actual reference binder beat long unfocused reading sessions - since both parts are open book, your ability to navigate references quickly matters as much as memorization. A full walkthrough of this kind of prep sequencing is available in the WI-JP Study Guide 2026: How to Pass on Your First Attempt, and if you want a sense of how demanding the format feels in practice, How Hard Is the WI-JP Exam? Complete Difficulty Guide 2026 covers that directly. You can also run timed practice questions on our practice test platform to get comfortable with the pacing before test day.
After Passing: Renewal and Supervision Rules
Passing both parts doesn't close the book on WI-JP obligations. A few details matter after you clear the exam:
- Validity window: Passing results are valid for one year. If licensure isn't finalized within that window, retesting requirements may apply.
- Retake eligibility: If you test through Pearson VUE and need a retake, you'll need a new DSPS exam eligibility approval before rescheduling - you can't simply rebook.
- Renewal cycle: The journeyman plumber license renews every four years, on March 31, with a $180 renewal fee.
- Continuing education: Each renewal term requires 24 hours of approved continuing education.
- Supervision: Journeyman-level work remains subject to applicable master-plumber or other authorized supervision requirements - passing WI-JP doesn't remove those obligations.
DSPS also periodically updates plumbing code references, including tracked 2026 code updates, so candidates and prep resources alike should confirm they're studying the current reference editions before exam day. For a broader picture of whether the time and cost investment pays off across a plumbing career, see Is the WI-JP Certification Worth It? Complete ROI Analysis 2026 and WI-JP Salary Guide 2026: Complete Earnings Analysis.
FAQ
It's two separate parts. Part 1 has 87 questions with a three-hour limit, and Part 2 has 120 questions with its own three-hour limit - 207 questions and six hours combined, but administered as distinct sessions with independent 70% passing standards.
Yes, but only if they're printed, three-hole-punched, and placed inside the required binder alongside the statutes and code references. Loose papers, sticky notes, and paperclips are prohibited.
Pearson VUE charges $90 per part, totaling $180 for both parts. Application and credential fees through DSPS's LicensE system are billed separately from the testing fees.
Pearson VUE administers Wisconsin plumbing exams only at centers in Eau Claire, Madison, Brookfield, Kenosha, Ashwaubenon, and Milwaukee. DSPS examination locations are a separate option, but switching from Pearson back to a DSPS location isn't allowed once selected.
Each part is scored independently against the 70% standard, so you would need to retest on the part you didn't pass. If testing through Pearson VUE, a new DSPS eligibility approval is required before scheduling a retake.