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.


Upcoming 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
  • August 25 and 26, 2020
  • October 20 and 21, 2020
  • December 15 and 16, 2020


Testing Location

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

1084 Kenran Industrial Blvd.

St. Louis, MO 63137


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!