Plumbers Training Institute 2021 Spring

Who needs to be licensed for plumbing in Iowa?

To work as a plumber in the State of Iowa a plumbing license from the Iowa Plumbing and Mechanical Systems Board is required. Anyone working as a plumber in the state of Iowa is required to be licensed with the Board.

What are the types of plumbing licenses available in Iowa?

Master & Journeyperson Plumbing.

How do I get my Plumbing license in Iowa?

  • Submit your examination candidate application and appropriate fees to the Board.
  • Once you receive approval from the Board to take your exam(s), you must register for your exam with Kirkwood Community College.
  • Call for an appointment with the test center of your choice.
  • Prepare for your exam, using the content outlines in this bulletin and other materials.
  • Present your required identification at the test center and take the exam.
  • Once you pass, you will need to contact the Board office to submit a Post-Examination Licensure application.

What code is the Iowa plumbing test based on?

2018 Uniform Plumbing Code, International Association of Plumbing and Mechanical Officials (IAPMO)
Iowa State Plumbing Code 2019 – Amendment Booklet, Iowa Dept. of Public Health,

What are the examination fees for a plumbing license in Iowa?

Application fee: $35
Exam Fees:
Master Plumber with Gas $99
Journeyperson Plumber with Gas $99

Licensing fees:
Master Plumber $240
Journeyperson Plumber $180

What does your Iowa plumber exam prep cover?

This exam prep will cover all the standard plumbing information from the latest edition of the Uniform Plumbing Code

What can I expect from the Iowa plumbing exam?

Journeymen with gas:
Open Book, 75 questions, 3 hours

Subject Area Percent
General Knowledge of the Uniform Plumbing Code 31%
Drainage, Waste, and Vent Systems 36%
Water Supply and Distribution 22%
Fuel Piping 11%
References allowed during the exam
1 2018 Uniform Plumbing Code, International Association of Plumbing and Mechanical Officials (IAPMO)
2 Iowa State Plumbing Code 2019 – Amendment Booklet, Iowa Dept. of Public Health,

Master Plumber with Gas
Open Book, 125 questions, 5 hours

Subject Area Percent
Chapter 2 - Definitions 2%
Chapter 3 - General Regulations 4%
Chapter 4 - Plumbing Fixtures and Fixture Fittings 3%
Chapter 5 - Water Heaters 20%
Chapter 6 - Water Supply and Distribution 12%
Chapter 7 - Sanitary Drainage 12%
Chapter 8 - Indirect Wastes 2%
Chapter 9 - Vents 2%
Chapter 10 - Traps and Interceptors 3%
Chapter 11 - Storm Drainage 2%
Chapter 12 - Fuel Gas Piping 4%
Chapter 13 - Health Care Facilities and Medical Gas and Medical Vacuum Systems 4%
Chapter 14 - Firestop Protection 2%
Chapter 15 - Alternate Water Sources for Nonpotable Applications 2%
Sizing - Water Systems Sizing 9%
Sizing - Drain, Waste and Vent Systems Sizing 10%
Sizing - Fuel Pipe Sizing 6%

References allowed during the exam
1 2015 Uniform Plumbing Code, International Association of Plumbing and Mechanical Officials (IAPMO)
2 Iowa State Plumbing Code 2016 – Amendment Booklet, Iowa Dept. of Public Health,

Is the Iowa plumber exam open book?

Yes,  NOTE: Code references may be brought into the exam room in loose-leaf format.

What should I bring to the Iowa plumber exams?

Make sure to take the email that was sent to you within 1 hour after your registration. Subject line "Exam name" (online) class log in information. Remember this has your user name and password needed to take the test.
Arrival: You should arrive at least 30 minutes before your scheduled examination appointment in order to verify your identification and allow time for you to sign in.
Identification: You must present a valid form of identification before you can test. That identification document must

  • Be government-issued (e.g., driver's license, state-issued identification card, military identification card or passport)
  • Contain both a current photo and your signature
  • Have a name that exactly matches the name used to register for the exam (including designations such as "Jr", or "III").

Where can I take the Iowa plumber exam?
You may take your exam at any of the qualifying test centers in Iowa and once registered with Kirkwood you will need to contact the test center of your choice to schedule your testing time. This list is provided in your confirmation email sent after you have completed your registration with Kirkwood Community College.

Test center cities include:
Ankeny IA
Des Moines IA
Dubuque IA
Cedar Rapids IA
Council Bluffs IA
Creston IA
Estherville IA
Fort Dodge IA
Ottumwa IA
Marshalltown IA
Mason City IA
Sheldon IA
Sioux City IA
Tipton IA
Waterloo IA

How do I know if I passed the Iowa plumber exam?

At the end of your exam, your score will be shown on the screen. The report will indicate percent of correct answers. Exam results are confidential and will be revealed only to the applicant and the Board.

Are there accommodations for individuals with special needs during the plumbing licensing exam?

Reasonable testing accommodations are provided to allow candidates with documented disabilities recognized under the Americans with Disabilities Act an opportunity to demonstrate their skills and knowledge. There is no additional charge for these accommodations.

To request accommodations under the Americans with Disabilities Act (ADA), please go to the Kirkwood Community College, Learning Services office in Cedar Rapids located at 2036 Cedar Hall to fill out an application.  You may also click on the link provided to print out the application and return the completed form to Learning Services: CE Accomodations Request Form. For additional information and questions on receiving ADA accommodations please call the Learning Services office at 319-398-5574.

Does Iowa offer reciprocity for plumbing licenses?

The board may enter into reciprocity agreements with other states that have plumbing, mechanical, HVAC-refrigeration, sheet metal, and hydronic licensing requirements similar to those set forth under Iowa law.

Who issues Iowa plumbing licenses?

Plumbing and Mechanical Systems Board office
321 E 12th Street
Des Moines, Iowa 50319-0075
Phone: 1-866-280-1521
FAX: 515-281-6114

For questions about scheduling exams:
Kirkwood Community College, Continuing Education Department
6301 Kirkwood Blvd SW
Cedar Rapids, IA 52404
Phone: 319-398-7768 or 319-398-5529

Useful links:

Application Forms


  • Information Last Updated: 02/2020
  • Did you find incorrect information? Email Us
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