100+ Free OR Plumber Practice Questions
Pass your Oregon Journeyman Plumber License Exam exam on the first try — instant access, no signup required.
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Key Facts: OR Plumber Exam
70%
Passing Score
Building Codes Division
100
Questions
3 hours
~$100+$265
Exam Fee
PSI
OSPC (based on UPC)
Code
Building Codes Division
Oregon's journeyman plumber exam is administered by PSI on behalf of the Building Codes Division. It has approximately 100 questions with a 3 hours time limit and requires 70% to pass. The exam fee is ~$100+$265. Oregon uses the OSPC (Oregon Specialty Plumbing Code, based on UPC) as its plumbing code.
About the OR Plumber Exam
Oregon-specific journeyman plumber licensing exam based on the OSPC (Oregon Specialty Plumbing Code, based on UPC) covering drainage, water supply, venting, gas piping, and fixtures
Questions
100 scored questions
Time Limit
3 hours
Passing Score
70%
Exam Fee
~$100+$265 (Building Codes Division / PSI)
OR Plumber Exam Content Outline
Drainage Systems & Pipe Sizing
Drain sizing, fixture units (DFU), slope requirements, cleanouts, building drain and sewer sizing per OSPC (based on UPC)
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, Oregon state amendments, medical gas, grease interceptors, and storm drainage
How to Pass the OR Plumber Exam
What You Need to Know
- Passing score: 70%
- Exam length: 100 questions
- Time limit: 3 hours
- Exam fee: ~$100+$265
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
OR Plumber Study Tips from Top Performers
Frequently Asked Questions
What plumbing code does Oregon use?
Oregon uses the OSPC (Oregon Specialty Plumbing Code, based on UPC) for its plumbing licensing exam. Candidates should study the current adopted edition with any state-specific amendments.
Who administers the Oregon plumber exam?
The exam is administered by PSI on behalf of the Building Codes Division. Register through PSI after your application is approved.
What is the passing score?
Oregon requires 70% to pass the journeyman plumber exam. The exam has 100 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.