Free IA Plumber Exam Prep
Iowa Journeyman Plumber License Exam (Iowa Plumbing and Mechanical Systems Board / PSI)
Prepare for the IA 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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Iowa Plumber License License: Complete Roadmap
Follow this path to organize your licensing and exam preparation
UPC Fundamentals & DrainageYou are here
Master DFU calculations, drain sizing, slope requirements, and cleanout placement.
Water Supply & Backflow Prevention
Study pipe sizing, WSFU calculations, backflow devices, and water heater requirements.
Venting & Gas Piping
Learn vent sizing, wet venting, circuit venting, and gas pipe sizing calculations.
Fixtures, Materials & Iowa Code
Cover fixture installation, materials, Iowa-specific amendments, and timed practice.
Can You Take the IA Plumber Exam?
Check if you meet the basic eligibility requirements
- •Submit application to Iowa Plumbing and Mechanical Systems Board
- •Schedule exam through PSI
- •Pay exam and license fees
IA Plumber Quick Facts
Time to Get Licensed
6-10 weeks for most candidates
From start to license in hand
Retake Policy
Candidates who fail may reapply and pay the exam fee again to PSI.
Total Cost Breakdown
Free IA Plumber Prep Tools
Reported exam pass rate: Iowa Plumbing and Mechanical Systems Board does not publish official pass rates; estimated 50-60%. Check the exam sponsor for the latest official figure.
100 Practice Questions
UPC-based questions covering all IA plumber exam topics with explanations
AI-Powered Learning
Get instant explanations on drainage, venting, water supply, and gas piping
2026 Updated
Aligned with current Iowa requirements and UPC code edition
Free Access
All 100 practice questions free — no account required to start
What You'll Study
9 chapters covering the exam topics in this guide
Chapter 1: Iowa Licensing, Exam Format, Code Adoption & UPC General Regulations
5 sections
Chapter 2: Plumbing Fixtures & Fixture Fittings (UPC Chapter 4)
5 sections
Chapter 3: Sanitary Drainage & Building Sewers (UPC Chapter 7)
8 sections
Chapter 4: Venting Systems (UPC Chapter 9)
8 sections
Chapter 5: Traps, Interceptors & Indirect Waste (UPC Chapters 8 and 10)
4 sections
Chapter 6: Water Supply & Distribution (UPC Chapter 6)
5 sections
Chapter 7: Water Heaters (UPC Chapter 5)
4 sections
Chapter 8: Storm Drainage (UPC Chapter 11)
5 sections
Chapter 9: Fuel Gas Piping & Appliance Venting (UPC Chapter 12)
5 sections
IA Plumber Exam Details
Iowa Journeyman Plumber License Exam (Iowa Plumbing and Mechanical Systems Board / PSI)
Administered by Iowa Plumbing and Mechanical Systems Board
What's Included
9 Chapters
Complete exam coverage
Practice Quizzes
With detailed explanations
Free to Start
No credit card required
Quality Exam Prep Shouldn't Cost Hundreds
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