100+ Free CA Plumber Practice Questions
Pass your California Journeyman Plumber License Exam exam on the first try — instant access, no signup required.
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Key Facts: CA Plumber Exam
Scaled scoring
Passing Score
Contractors State License Board (CSLB)
100
Questions
3.5 hours time limit
$450+
Exam Fee
PSI
CPC
Code Basis
California uses the California Plumbing Code (CPC), which is based on the UPC with extensive state amendments
California's journeyman plumber exam has approximately a 55% pass rate. The 100-question exam requires Scaled scoring to pass and is based on the CPC. California uses the California Plumbing Code (CPC), which is based on the UPC with extensive state amendments.
About the CA Plumber Exam
The California journeyman plumber exam is administered by PSI on behalf of the Contractors State License Board (CSLB). The C-36 Plumbing Contractor exam is closed-book and uses scaled scoring rather than a fixed percentage. It tests knowledge of the CPC, drainage systems, water supply, venting, gas piping, and California-specific amendments.
Questions
100 scored questions
Time Limit
3.5 hours
Passing Score
Scaled scoring
Exam Fee
$450+ (Contractors State License Board (CSLB))
CA Plumber Exam Content Outline
Drainage, Waste & Vent Systems
CPC drain sizing, fixture units, slope requirements, cleanouts, trap seals, and DWV installation per California amendments
Water Supply & Distribution
Pipe sizing, backflow prevention, cross-connection control, water heaters, pressure regulation, and T&P relief requirements
Venting Systems
Vent sizing, wet venting, circuit venting, air admittance valves, vent termination per the CPC
Gas Piping & Appliances
Gas pipe sizing, BTU calculations, pressure testing, appliance venting, and combustion air requirements
Code Administration & Materials
Permits, inspections, approved materials, joint methods, pipe supports, and California-specific rules
How to Pass the CA Plumber Exam
What You Need to Know
- Passing score: Scaled scoring
- Exam length: 100 questions
- Time limit: 3.5 hours
- Exam fee: $450+
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
CA Plumber Study Tips from Top Performers
Frequently Asked Questions
What plumbing code does California use?
California uses the California Plumbing Code (CPC), which is based on the UPC with extensive state amendments. The Contractors State License Board (CSLB) oversees all licensing requirements. The exam is based on the current adopted CPC edition.
How many questions are on the California plumber exam?
The California C-36 plumbing contractor exam has approximately 100 multiple-choice questions with a time limit of 3.5 hours. California uses scaled scoring rather than a fixed percentage — your score is adjusted based on question difficulty.
Who administers the California plumber exam?
The exam is administered by PSI on behalf of the Contractors State License Board (CSLB). You must apply through the agency and schedule your exam through PSI's testing system.
What experience is required for the California journeyman plumber exam?
At least 4 years of journeyman-level experience within the last 10 years as a plumber. Contact the Contractors State License Board (CSLB) for specific requirements and application procedures.