IL Plumber study materials
IL Plumber study resources

IL Plumber study guide

IL Plumber · Work through your exam, one topic at a time.

The Illinois plumber license is the credential the Illinois Department of Public Health (IDPH) issues to individuals who plan, inspect, install, alter, extend, repair, and maintain plumbing systems in the state. Under the Illinois Plumbing License Law (225 ILCS 320), IDPH licenses plumbers, plumbing contractors, plumbers' apprentices, irrigation contractors, and retired plumbers. The state licensing exam is the final step after a supervised apprenticeship: IDPH states that candidates must pass a state licensing exam after working under a licensed plumber as a licensed apprentice for a 48 to 72 month period. The exam is multiple choice and draws on four areas: the Illinois Plumbing Code; the Illinois Plumbing License Law and Plumbers Licensing Code; planning, inspection, installation, alteration, extension, repair, and maintenance of plumbing systems; and public health protection, including water quality, cross-connection control, and pathogen control. The IL Plumber study guide has 4 sections and about 1,391 words.

01

Illinois Plumbing Code

This domain tests your ability to apply the Illinois Plumbing Code, 77 Ill. Code 890, to field decisions: permits, inspections, drainage, venting, water supply, fixtures, and materials.

371 words, about 2 min
02

Illinois Plumbing License Law (225 ILCS 320) and Plumbers Licensing Code

This domain tests the Illinois Plumbing License Law (225 ILCS 320) and the Plumbers Licensing Code: who may perform plumbing, license types, contractor duties, permits, discipline, and penalties. The Illinois Department of Public Health administers plumbing licensure.

331 words, about 2 min
03

Plumbing Systems: Planning, Inspection, Installation, Alteration, Extension, Repair and Maintenance

This domain tests planning and executing plumbing work: plan review, permits, rough-in and final inspection, installation, alteration, extension, repair, maintenance, and testing. Questions often ask for the next inspection step or the correct test.

344 words, about 2 min
04

Public Health Protection: Water Quality, Cross-Connection and Pathogen Control

This domain tests protection of potable water: cross-connection control, backflow prevention, water quality, and pathogen control. Expect scenario questions about which backflow method is required.

345 words, about 2 min