Practice test

Illinois Plumbing Practice Test

Free Illinois plumbing practice test with 20 questions on water supply, DWV systems, plumbing code principles, and IDPH plumber licensing. Instant scoring.

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These questions are for study practice only and are not official exam questions.

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Question 1

1

What is the purpose of a P-trap installed beneath a plumbing fixture?

Question 2

2

By what date each year must an Illinois Plumber's License be renewed?

Question 3

3

Which Illinois credential is separate from the general Plumber's License and involves its own examination application?

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