What is on the Illinois plumbing contractor exam?
- The exam
- Plumber license: state exam after apprenticeship; application due 30 days before the exam; application fee $175 (Illinois licensed apprentice) or $225 (Chicago or out-of-state licensed). The plumbing contractor registration has no exam; it rides on the plumber of record's license.1
Exam fee and retake rules: check with Illinois Department of Public Health.
Journeyman and master exams in Illinois
Plumber
- Who gives it
- No outside testing company. The Illinois Department of Public Health prepares and gives the plumber license exam itself2
How do you book the exam?
Apply to the Illinois Department of Public Health first. The board approves your application, then tells you how to schedule with the testing company. Illinois Department of Public Health
Sources
- Illinois Department of Public Health: exam (dph.illinois.gov, 2026-10-27)
- Illinois plumber license: exam (ilga.gov, 2026-10-27)