How to Get Your Journeyman Plumber License in Illinois
Governing body, experience requirements, exam details, and step-by-step instructions for Illinois. Last verified: February 2026.
Check the figures before you rely on them
Some fees, passing scores and hour requirements on this page are estimates we have not yet confirmed against IL IDPH. They change from cycle to cycle. Confirm anything you are budgeting or scheduling around directly with them before you apply.
Quick Facts
Hours Required
~5 years apprenticeship
Exam
IL Journeyman Plumber Exam
Fee Range
Governing Body
IL IDPH
Requirements
Illinois issues a statewide Plumber license through the Illinois Department of Public Health (IDPH). Applicants must complete an approved plumbing apprenticeship program (typically 5 years / 10,000 hours) or equivalent documented experience. Illinois requires both a journeyman and master plumber license for different levels of work.
Steps to Apply
- 1
Complete an IDPH-approved plumbing apprenticeship program (approximately 5 years) or document equivalent journey-level experience.
- 2
Submit a Journeyman Plumber license application to the Illinois IDPH with proof of apprenticeship completion.
- 3
Pay the required application and exam fees to the IDPH.
- 4
Pass the Illinois IDPH Journeyman Plumber examination.
- 5
Receive your Illinois Journeyman Plumber license; renew as required by IDPH.
Exam Details
The Illinois IDPH Journeyman Plumber exam covers the Illinois State Plumbing Code and applicable plumbing practices. The exam is administered by the IDPH.
Fees & Costs
Estimated total:
Frequently Asked Questions
Does Illinois have a statewide plumber license?
Yes. Unlike electricians, Illinois does have a statewide plumber licensing program administered by the Illinois Department of Public Health (IDPH). Both Journeyman Plumber and Master Plumber licenses are issued at the state level.
What plumbing code does Illinois use?
Illinois uses the Illinois State Plumbing Code, which is based on the International Plumbing Code (IPC) with Illinois-specific amendments.
How long is an Illinois Journeyman Plumber license valid?
Illinois plumber licenses require periodic renewal.
What is the difference between a Journeyman and Master Plumber in Illinois?
A Journeyman Plumber can perform plumbing work under the supervision of or in the employ of a Master Plumber. A Master Plumber has additional experience, passes an advanced exam, and can supervise others and take on contracts independently.
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