100+ Free OK Plumber Practice Questions
Pass your Oklahoma Journeyman Plumber License Exam exam on the first try — instant access, no signup required.
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Key Facts: OK Plumber Exam
70%
Passing Score
Construction Industries Board
80
Questions
3 hours
$75-330
Exam Fee
PSI
IPC
Code
Construction Industries Board
Oklahoma's journeyman plumber exam is administered by PSI on behalf of the Construction Industries Board. It has approximately 80 questions with a 3 hours time limit and requires 70% to pass. The exam fee is $75-330. Oklahoma uses the IPC as its plumbing code.
About the OK Plumber Exam
Oklahoma-specific journeyman plumber licensing exam based on the IPC covering drainage, water supply, venting, gas piping, and fixtures
Questions
80 scored questions
Time Limit
3 hours
Passing Score
70%
Exam Fee
$75-330 (Construction Industries Board / PSI)
OK Plumber Exam Content Outline
Drainage Systems & Pipe Sizing
Drain sizing, fixture units (DFU), slope requirements, cleanouts, building drain and sewer sizing per IPC
Water Supply & Distribution
Pipe sizing, backflow prevention, pressure regulation, cross-connection control, and water service requirements
Venting Systems
Vent sizing, wet venting, air admittance valves, vent termination, circuit venting, and combination waste and vent
Fixtures & Appliances
Fixture installation, clearances, water heaters, accessible fixtures, and commercial fixture requirements
Gas Piping
Gas pipe sizing, appliance venting, pressure testing, BTU calculations, CSST bonding, and combustion air
Code Administration & Special Systems
Permits, inspections, plan review, Oklahoma state amendments, medical gas, grease interceptors, and storm drainage
How to Pass the OK Plumber Exam
What You Need to Know
- Passing score: 70%
- Exam length: 80 questions
- Time limit: 3 hours
- Exam fee: $75-330
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
OK Plumber Study Tips from Top Performers
Frequently Asked Questions
What plumbing code does Oklahoma use?
Oklahoma uses the IPC for its plumbing licensing exam. Candidates should study the current adopted edition with any state-specific amendments.
Who administers the Oklahoma plumber exam?
The exam is administered by PSI on behalf of the Construction Industries Board. Register through PSI after your application is approved.
What is the passing score?
Oklahoma requires 70% to pass the journeyman plumber exam. The exam has 80 questions with a 3 hours time limit.
Is the exam open book?
Most PSI-administered plumbing exams allow a bound copy of the adopted plumbing code. No loose pages, handwritten notes, or electronic devices are permitted. Check current exam policies before your test date.