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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.

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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.