Pass your Plumbing certification exam
Comprehensive plumbing exam prep for apprentice, journeyman, and master plumbers.
Your ReadyScore
Predicted chance of passing
Questions
900+
28K+
Licensed Plumbers Certified
91%
Pass Rate
900+
Practice Questions
4.7
App Store Rating
Free Plumbing Certification Study Guide
Exam breakdown, domain weights, sample questions, and study timeline.
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Your path to becoming a Licensed Plumber
Three simple steps to know exactly when you're ready to pass the Plumbing Certification
Practice with real questions
Answer questions that mirror the exact format and difficulty of the actual Plumbing Certification exam.
Get your ReadyScore
Our algorithm predicts your actual probability of passing—not just your percentage correct.
Pass with confidence
Schedule your exam when your ReadyScore hits 85%+ and pass on your first attempt.
All Plumbing Certification content areas
Drainage Systems (DWV)
Water Supply Systems
Fixtures & Appliances
Gas Piping
Code Requirements
Calculations & Sizing
More than just practice questions
Upsero uses proven science to help you study smarter, not harder.
ReadyScore Prediction
Know your actual probability of passing your plumbing exam
Code Coverage
Comprehensive coverage of IPC and UPC plumbing codes
Pass Guarantee
Get a full refund if you reach 85% ReadyScore and don't pass
Join 28K+ plumbers who passed
"The code questions were exactly like my state exam. Passed Journeyman!"
Steve M.
Journeyman Plumber, Ohio
"ReadyScore helped me know when I was ready. Passed on my first try!"
David K.
Master Plumber, Texas
"Best plumbing exam prep I've found. The DWV calculations were invaluable."
Mike T.
Journeyman Plumber, California
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Frequently asked questions
Which plumbing code is covered?
We cover both the International Plumbing Code (IPC) and Uniform Plumbing Code (UPC). Check which code your state uses and focus on those questions.
What exam levels are included?
Our prep covers content for Apprentice, Journeyman, and Master Plumber licensing exams.
What topics are covered?
We cover Drainage Systems, Water Supply, Fixtures, Gas Piping, Code Requirements, and Calculations for pipe sizing and drainage.
Can I use my code book during the exam?
Most plumbing licensing exams are open-book, allowing you to reference the plumbing code. Our prep helps you learn where to find information quickly.