Idaho Plumbing Exams

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

Need of a License:  Journeyman plumbers, specialty journeyman plumbers, plumbing contractors and specialty plumbing contractors need a license to work in Idaho. 

Procedures for Getting a License:    Plumbing candidates must take an exam to obtain a license.

Who Grants a License:  Plumbing licenses are issued by the Idaho Division of Building Safety.

Qualifications to take the Exam and receive a License:

Journeyman  – must have at least  4  years of experience as an apprentice making plumbing installations under the constant on-the-job supervision of a qualified journeyman plumber and 4 years (a minimum of 576 hours) of approved apprenticeship plumbing class room instruction.

Specialty journeyman  – must meet the requirements for the specialty, i.e. appliances, water pumps and mobile homes.  The requirements differ from specialty to specialty.

Plumbing Contractor – must have at least 2 ½ years of experience as a journeyman plumber either in Idaho or in another state.

Test Content:   

     Journeyman – 100 questions and practical exam, 3 hours, open book, need 75% to pass, with the following content:

       Administration                                    5

       Definitions                                         10

       General Regulations                            7

       Traps & Intercepts                              7

       Cleanouts                                          4

       Fixtures                                             5

       Indirect Wastes                                  6

       Water Supply & Back Flow                   10

       Water Heater                                     5

       Drainage                                           3

       Drainage Calculations                         5

       Vents                                               2

       Vent Calculations                               4

       Storm Drains                                      3

       Developed Length                              4

       Isometric Analysis                              12

       Fitting ID                                           4

       Gas Piping                                         4

     Appliance Specialty Journeyman – 25 questions, 1 hour, open book, need score of 75% to pass, with following content:

       Administration                                    2

       Definitions                                          4

       General Regulations                            8

       Water Supply                                      4

      Water Heater                                       4

      Gas Piping                                           3

      Appliance Specialty Contractor – 50 questions, 2 hours,  open book, 75% to pass, with the following content:

       Administration                                    2

      Definitions                                          4

      General Regulations                             4

      Water Supply                                      4

      Water Heater                                      4

       Gas Piping                                         2

       Insurance Laws                                   4

       Tax Laws                                            2

       Safety                                                2

       Management                                       2

      Lien Laws                                             2

       Employment Laws                                3

       General Accounting                              3

       Idaho Rules                                        5

       Idaho Statutes                                    5

       Permit Calculations                              2

     Plumbing Contractor – 100 questions, 3 hours, open book, 75% to pass with following content:

       Administration                                     2

       Definitions                                          2

       General Regulations                             5

       Traps                                                  2

       Cleanouts                                            2

        Interceptors                                        2

       Fixtures                                               4

       Hangers & Supports                               2

       Indirect Wastes                                     2

       Water Supply                                        5

       Water Heater                                        2

       Drainage                                              3

       Drainage Calculations                            2

      Vents                                                    4

      Vent Calculations                                    2

      Storm Drains                                          1

      Developed Length                                   4

      Isometric Analysis                                   4

      Water Pump Specialty Journeyman – 25 questions, 1 hour, open book, 75% to pass with the following content:

       Administration                                       2

       Definitions                                            4

        General Regulations                              7

       Water Supply                                         4

       Drainage                                               3

       Rules & Lawas                                        5

How to Apply for the Test:  You can access the applications online with the following links:   

     Journeyman  

     Specialty journeyman 

     Contractor 

     Specialty contractor

Mail the completed application to:

     Idaho Division of Building Safety 

      Plumbing Bureau, Licensing Section

      1090 E. Watertower, Street

      Meridian, ID  83642

For more information call (208) 334-3442

After you are approved to take the exams, you will be provided information on how to register to take the exams.

Who Administers the Exam:  Gainesville Independent Testing Services and Pearson Vue.

Fees:  There are fees to take the test.

License Renewal:  Licenses must be renewed every year.   There is a continuing education requirement for plumbers.

Applicable Code:   Idaho follows the Uniform Plumbing Code (UPC). 

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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.

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.

Pass the Idaho Plumbing License Exam with these Plumbing Practice Exam Kits which cover topics in the actual Idaho Plumbing Exam.  See ads below:


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