Due to COVID-19, a FLEX (remote) option to take the license exams are now available. Please note the FLEX option is not available for the Journeyman Plumber Practical Exam. The practical exam must be in person.

The facility used for administering license exams for St. Louis County is currently closed leaving us unable to administer in-person exams. Based on the information we have received, the facility is expecting to reopen by August. We will do our best to resume testing as soon as it is safe and possible to do so. 


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


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.

  • April 21 and 22, 2020 - POSTPONED DUE TO COVID-19 SHUT DOWNS.
  • June 23 and 24, 2020 - POSTPONED DUE TO COVID-19 SHUT DOWNS.
  • August 25 and 26, 2020 - POSTPONED DUE TO COVID-19 SHUT DOWNS.
  • October 24, 2020 - REGISTRATION IS FULL
  • December 5, 2020


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.

To Register for an Exam

Click Here!