Ohio Plumbing License Exams

The Ohio Plumbing License Exam covers many topics including: Vents & Venting; Administrative Procedures; Fixtures; Drainage Systems and more.  Whether you live in Cincinnati, Cleveland, Toledo or another city or county, the resources below will help you get started:

Need of a License:   A plumber needs a license to work as a contractor in Ohio.

Who Grants a License:  Plumbing licenses are issued by the Ohio Construction Industry Licensing Board (OCILB).

Procedures for Getting a License:    A candidate for a plumbing contractor license must take and pass a business and law exam,  as well as a trade-specific exam.  The test is 4 hours long .  It is an open book exam and highlighting is permitted but no writing is allowed in the reference that is used.  Detailed information about the test is provided in a candidate bulletin.

Qualifications to take the Exam and receive a License:  A candidate must meet experience and education requirements to take the test.  Candidates must also carry contractor's liability insurance above a minimum level and go through a federal and state background check.

Test Content:  The plumbing test has 100 questions and you must get at least a 70% score to pass.  The test has the following content and number of questions:

     General Knowledge - 8

     General Regulations - 20

     Plumbing Fixtures - 6

     Water Supply Systems - 10

     Drainage, Waste and Sanitary Vents - 24

     Indirect Waste - 4

     Roof Drain Piping - 3

     Specialty Plumbing - 5

     Isometric Analysis - 20

Who Administers the Test:  PSI Exams Online

How to Apply for the Test:  You can download and print out the test application packet at Application. The application must be notarized.  Mail the completed application to:

     Ohio Department of Commerce

     Department of Commerce, OCILB

     6606 Tussing Road

     Reynoldsburg, OH 43068

 You must be approved by the OCILB to take the exam.

Fees:  There are fees to take the test.

License Renewal:  Licenses must be renewed every year.  Plumbers must complete 10 hours of approved continuing education to renew a license.

Applicable Code:  Ohio has adopted the International Plumbing Code developed 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.