Free WI Plumber Exam Prep
Wisconsin Journeyman Plumber License Exam
Prepare for the WI Plumber exam without spending hundreds on expensive prep courses. Free study guides, practice questions, flashcards, and related exam resources.
Quick Facts
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Wisconsin Plumber License License: Complete Roadmap
Follow this path to organize your licensing and exam preparation
WI Code Fundamentals & DrainageYou are here
Master Wisconsin State Plumbing Code structure, drainage sizing, DFU calculations, and 4-inch sewer minimum
Water Supply & Cross-Connection
Study water distribution, Wisconsin's cross-connection control program, backflow prevention, and water heaters
Venting & POWTS
Master Wisconsin vent requirements including frost closure (vent terminal 8 inches above the roof; 2-inch minimum terminal, increased 6 inches inside the building), gas pipe sizing
WI-Specific Topics & Practice
Review POWTS regulations, license categories, fixture requirements, and complete timed practice exams
Can You Take the WI Plumber Exam?
Check if you meet the basic eligibility requirements
- •Apply to Wisconsin DSPS through LicensE ($10 application + $20 exam fee, Table SPS 305.02)
- •Schedule Part 1 and Part 2 with Pearson VUE ($90 per part)
- •Bring your own Wisconsin Plumbing Code (SPS 381-387) references — the exam is open book
- •Pay the $180 license fee after passing both parts
WI Plumber Quick Facts
Time to Get Licensed
10-14 weeks for most candidates
From start to license in hand
Retake Policy
Only failed parts are retaken, but all parts must be passed within one year after the date of the initial examination or every part must be retaken (SPS 305.09 (6) (b)); each Pearson VUE retake is a new $90 seat fee for that part.
Total Cost Breakdown
Free WI Plumber Prep Tools
Reported exam pass rate: Not published. These figures describe exam candidates, not OpenExamPrep user outcomes. Check the exam sponsor’s website for published statistics.
160 Practice Questions
Wisconsin-specific questions covering SPS 381-387 state plumbing code, frost requirements, and POWTS
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Get instant explanations covering Wisconsin's unique state-specific plumbing code provisions
2026 Updated
Review Wisconsin State Plumbing Code (SPS 381-387) as currently enforced by DSPS
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What You'll Study
11 chapters covering the exam topics in this guide
Chapter 1: Licensing, Exam Rules & Code Administration
5 sections
Chapter 2: Sanitary Drainage Systems (SPS 382.30)
4 sections
Chapter 3: Venting Systems & Cold-Climate Vent Terminals (SPS 382.31)
4 sections
Chapter 4: Traps, Indirect Waste & Wastewater Treatment Devices
4 sections
Chapter 5: Water Supply Systems (SPS 382.40)
5 sections
Chapter 6: Cross-Connection Control & Backflow Prevention (SPS 382.41)
3 sections
Chapter 7: Plumbing Fixtures, Fittings & Appliances (SPS 384.20)
3 sections
Chapter 8: Piping Materials, Joints & Supports (SPS 384.30, 384.40, 382.60)
3 sections
Chapter 9: Private Onsite Wastewater Treatment Systems (SPS 383, 385 & Component Manuals)
5 sections
Chapter 10: Cleanouts, Stormwater, Sumps & Multipurpose Piping
4 sections
Chapter 11: Special Plumbing Installations & Water Reuse
3 sections
WI Plumber Exam Details
Wisconsin Journeyman Plumber License Exam
Administered by Wisconsin Department of Safety and Professional Services (DSPS)
Exam Content Breakdown
Based on the official Wisconsin Department of Safety and Professional Services (DSPS) content outline
Building drains, sewers, DFU loading, slope, and cleanouts (SPS 382.30, 382.35)
Vent sizing, developed length, wet and circuit venting, and frost-closure terminals (SPS 382.31)
Distribution sizing, WSFU tables, pressure, and temperature limits (SPS 382.40)
Backflow preventers and containment under the statewide program (SPS 382.41)
Trap seals, trap arms, and indirect and special waste (SPS 382.32-382.34)
Fixture clearances, flow rates, and appliance standards (SPS 384.20)
Approved pipe, fittings, joining methods and supports (SPS 384.30, 384.40, 382.60)
Private onsite wastewater treatment systems and component manuals (SPS 383)
Sumps and ejectors, interceptors, storm and clear-water drainage, and infiltration (SPS 382.30 (10), 382.34, 382.36, 382.365)
Licensing, plan review, testing, inspection and maintenance (ch. 145, SPS 305, SPS 382.20-382.22)
What's Included
11 Chapters
Complete exam coverage
Practice Quizzes
With detailed explanations
Free to Start
No credit card required
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What's Next After the WI Plumber?
After passing the WI Plumber, you can pursue these career paths
Wisconsin Master Plumber
Advance to contracting authority after at least 1,000 hours per year for 3 years of licensed journeyman work, then pass the master plumber exam (SPS 305.91 (3))
Wisconsin Cross-Connection Control Tester
Register under SPS 305.99 after a 40-hour department-approved course or an ASSE 5150 course to performance-test backflow prevention assemblies statewide
Wisconsin Commercial Plumbing Inspector
Certify under SPS 305.625 to inspect commercial plumbing for municipalities and agent jurisdictions enforcing SPS 381-387
WI Plumber Exam FAQ
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