IAPMO is proud to provide license testing services to the professionals working in St. Louis County, Missouri. We offer the following exams.

• Journeyman Plumber
• Master Plumber
• Journeyman Pipefitter
• Master Pipefitter
• Journeyman Sprinkler Fitter
• Master Sprinkler Fitter
• Journeyman Water Heater Specialist
• Master Water Heater Specialist
• Journeyman Lawn Irrigation
• Master Lawn Irrigation
• Master Drain Layer

To Register for an Exam, Click Here.

FLEX Testing

IAPMO provides a flexible and convenient test-taking with our FLEX (Flexible Exam) testing option. This remote online proctoring functionality enables IAPMO to provide our test takers with the flexibility to complete their exam remotely, in a secure and convenient environment when it best fits into their schedule and without having to travel to a testing center. Remote proctoring allows us to uphold the integrity of our exam administration process while providing a new, modern, and convenient way for candidates to earn their professional credentials.  Individuals choosing this option must have google chrome, a webcam, and a microphone.

Upcoming In-Person Test Dates

We will be conducting exams on following dates.

• February 10, 2024
• May 11, 2024
• June 8, 2024
• August 31, 2024
• October 26, 2024
• December 7, 2024

In-Person Testing Location

Testing will take place at the Local 562 Plumbers and Pipefitters Training facility.

3755 Corporate Trails

Earth City, MO  63045

Exam Information

You must bring your Plumbing Board Approval credential to the testing facility on your test day. You will not be allowed to test if you do not have it.

To Register for an Exam, Click Here.