Iowa Plumbing Exams

The Iowa Plumbing License Exam covers many topics including: Vents & Venting; Administrative Procedures; Fixtures; Drainage Systems and more.  Whether you live in Des Moines, Cedar Rapids, Davenport or another city or county, the resources below will help you get started:

Need of a License:  Master and journeyman plumbers need a license to work in Iowa.

Who Grants a License:  Plumbers are regulated by the Iowa Plumbing and Mechanical Systems Board

Procedures for Getting a License:    Candidates for a journeyman or master plumbing license must take an exam. For more information about the exams, see a Candidate Information Bulletin.

Content of the Test:  The master and journeyman tests have the following content and specifications:

Master - 200 questions, 6 hours to complete, open book, 75% to pass, with the following sections and number of questions:

     General Knowledge - 15

     General Regulations -20

     Plumbing Fixtures - 5

     Water Supply Systems - 10

     Drainage, Waste and Vents - 20

     Indirect Waste - 4

     Roof Drain Piping - 4

     Specialty Plumbing - 4

     Isometric Analysis - 6

     Fuel Gas Systems  - 10

     Safety - 2

Journeyman - 100 questions, open book, 3 hours to complete, 75% to pass, with the following subject areas and number of questions:

     General Knowledge - 15

     General Regulations -20

     Plumbing Fixtures - 5

     Water Supply Systems - 10

     Drainage, Waste and Vents - 18

     Indirect Waste - 3

     Roof Drain Piping - 4

     Specialty Plumbing - 4

     Isometric Analysis - 6

     Fuel Gas Systems  - 10

    Safety - 5

Qualifications to take the Journeyman Exam and receive a License:  Candidates must provide a U.S. Department of Labor Office of Apprenticeship  identification number and sponsor identification number or have completed at least  4 years of apprentice like or on the job training.

Qualifications to take the Master Exam and receive a license:  Candidates must have been a licensed journeyman plumber for a minimum of 2 years.

Who Administers the Test:  Prometric

How to Apply for the Test:  You can find the application and instructions online or call (866) 280-1521.

Mail the completed application to:

     Iowa Plumbing and Mechanical Systems Board

     Lucas State Office Building

     Iowa Department of Public Health

     321 E. 12th Street

     Des Moines, Iowa   50319

You must be approved before you take the test.

Fees:  There are fees to take the test.

License Renewal: Licenses must be renewed every three years.   Plumbers must complete at least 8 hours of board approved continuing education as a condition to renewal.

Applicable Code: Local governments of Iowa have adopted the International Plumbing Code established by the International Code Council.

______________________________________________________

For more information on licensing and exam preparation, go to Tests.com's

Journeyman Plumbing Test Guide

Master Plumbing Test Guide

And take Tests.com's Plumbing Practice Test.

For plumbing exam preparation products and services, such as study guides, practice tests, flashcards and courses, go to Tests.com's Journeyman Plumber Exam and Master Plumber Exam listings.