Dreaming of becoming a licensed plumber in Wisconsin? You’re not alone. With growing demand for skilled tradespeople—and plumbing consistently ranked among the most recession-resilient careers—it’s a smart move. But navigating the licensing process can feel overwhelming. That’s why we’ve created this clear, step-by-step guide on how to get a plumbing license in Wisconsin, tailored for aspiring plumbers who want to do it right, legally, and efficiently.
What Types of Plumbing Licenses Exist in Wisconsin?
Wisconsin offers three main plumbing license levels, each with distinct requirements:
- Apprentice Plumber
- Journeyman Plumber
- Master Plumber
You must progress through these levels in order—there’s no shortcut. The Wisconsin Department of Safety and Professional Services (DSPS) oversees all licensing through its Plumbing Examining Board.
💡 Did You Know? According to the U.S. Bureau of Labor Statistics (2024), employment of plumbers in the Midwest is projected to grow 6% by 2032, faster than average—making now an ideal time to get licensed in Wisconsin.
Step 1: Register as an Apprentice Plumber
Before you touch a pipe professionally, you must register as an apprentice with the DSPS.
Requirements:
- Be at least 16 years old
- Have a high school diploma or GED
- Be employed by a licensed master plumber (who acts as your sponsor)
How to Apply:
- Complete the Apprentice Plumber Application on the DSPS website.
- Pay the $30 registration fee.
- Submit proof of employment under a licensed master plumber.
✅ Important: Your apprenticeship must include at least 5,000 hours (≈2.5 years) of hands-on work and 400+ hours of classroom instruction from an approved training program (e.g., technical college, union program, or employer-sponsored course).
⚠️ Tip: Keep detailed logs of your work hours! DSPS may audit your records before you’re eligible to sit for the journeyman exam.
Step 2: Complete Your Apprenticeship
Wisconsin follows a structured apprenticeship model. Unlike some states, you can’t just “work under a plumber” informally—you need official training.
Approved Training Sources:
- Wisconsin Technical Colleges (e.g., Madison College, Milwaukee Area Tech)
- United Association (UA) Local 75 Union Programs
- Employer-based programs approved by DSPS
You’ll learn:
- Pipefitting & fixture installation
- Local and state plumbing codes (based on the Uniform Plumbing Code)
- Backflow prevention
- Drainage systems
- Safety protocols
📚 Bonus Fact: Wisconsin’s plumbing code aligns closely with national standards. For context on how plumbing codes evolved in the U.S., see Plumbing on Wikipedia.
Step 3: Apply for the Journeyman Plumber License
After completing your apprenticeship, you’re eligible to apply for your Journeyman Plumber License—the most commonly held plumbing credential in WI.
Eligibility Checklist:
- ✅ 5,000+ hours of supervised plumbing work
- ✅ 400+ hours of classroom instruction
- ✅ Registered apprentice status (active or expired within last 5 years)
- ✅ No felony convictions related to plumbing or fraud
Exam Details:
- Format: 100 multiple-choice questions
- Time Limit: 4 hours
- Passing Score: 70%
- Topics Covered:
- Wisconsin Administrative Code (Ch. SPS 381–387)
- Drainage, venting, and water supply systems
- Fixtures and appliances
- Isometric drawing interpretation
Fees:
- Application: $115
- Exam: $100 (if taken separately)
- License issuance (after passing): $75
💬 Pro Tip: Use the DSPS Exam Content Outline and practice with official study guides. Many candidates fail due to underestimating the code-specific questions—not the technical skills.
Step 4: Upgrade to Master Plumber (Optional but Recommended)
After holding your journeyman license for at least 2 years and completing 4,000 additional work hours, you can pursue your Master Plumber License.
Why Go Master?
- ✅ Start your own plumbing business
- ✅ Pull permits independently
- ✅ Supervise apprentices and journeymen
- ✅ Higher earning potential (average WI master plumbers earn $85,000+ annually)
Master Exam:
- Similar format to journeyman but with advanced design, system planning, and code interpretation
- Passing score: 75%
Common Mistakes to Avoid
| Mistake | Consequence | How to Avoid |
|---|---|---|
| Skipping classroom hours | Application denied | Enroll in a DSPS-approved program early |
| Poor exam prep | Failing the test (costs time & money) | Use official DSPS materials + take practice exams |
| Not tracking hours | Delayed eligibility | Use a digital log or official apprentice logbook |
| Working without a license | Fines up to $5,000 + legal action | Never perform plumbing work without proper registration |
How Long Does It Take to Get Licensed?
Here’s a realistic timeline:
| Stage | Duration |
|---|---|
| Apprentice Registration | 1–2 weeks |
| Apprenticeship (work + school) | 2.5–4 years |
| Journeyman Exam Prep | 1–3 months |
| License Issuance (after passing) | 2–4 weeks |
👉 Total: Approx. 3 to 4.5 years from start to journeyman license.
Note: Accelerated programs (e.g., through unions or technical colleges) may reduce classroom time but not work-hour requirements.
FAQ: How to Get a Plumbing License in Wisconsin
Q1: Can I get a plumbing license in Wisconsin with an out-of-state license?
A: Wisconsin does not reciprocate plumbing licenses with other states. Even if you’re licensed elsewhere, you must meet all WI requirements—including apprenticeship hours and passing the state exam—unless you qualify for a limited waiver (rare, and only for military spouses or federal employees).
Q2: How much does it cost total to get licensed?
A: Expect to spend $500–$1,200 over your apprenticeship, including:
- Registration & exam fees ($220–$300)
- Training program tuition ($300–$800, depending on provider)
- Study materials ($50–$100)
Q3: Do I need a business license too?
A: Yes, if you plan to operate independently. Once you’re a Master Plumber, you must register your plumbing business with the Wisconsin Department of Revenue and obtain local permits (varies by city).
Q4: What if I fail the journeyman exam?
A: You can retake it after 30 days. There’s no limit on attempts, but each retake costs $100. Most candidates pass on the second try with focused review.
Q5: Are online plumbing courses accepted in Wisconsin?
A: Only if approved by DSPS. Most classroom hours must be in-person or hybrid. Fully online programs typically don’t qualify. Always verify with DSPS before enrolling.
Q6: Can I work while waiting for my license after passing the exam?
A: No. You may only work under your current license level. After passing the journeyman exam, you must wait for your physical license card before working independently.
Conclusion
Getting a plumbing license in Wisconsin is a structured, regulated process—but it’s absolutely worth it. With strong job security, excellent pay, and the pride of mastering a vital trade, licensed plumbers in WI are in high demand. By following this roadmap—registering as an apprentice, completing training, passing exams, and staying compliant—you’ll build a career that lasts a lifetime.
🔧 Ready to start? Visit the Wisconsin DSPS Plumbing Page today to download forms and find approved schools.
Found this guide helpful? Share it with a friend who’s considering a plumbing career! 👷♂️💙
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