Taking the Exam - Plumbing

Exams

Before you can apply for a Master Plumber/Gas Fitter, Master Natural Gas Fitter, Journeyman Plumber/Gas Fitter, or Journeyman Natural Gas Fitter license you must pass the PSI Examination.

PSI Examination Services provides all testing for the MD State Board of Plumbing. PSI has testing centers located in Baltimore, College Park, Hagerstown, Lanham, and Salisbury.

To take the examination, you must first apply with PSI to sit for the test.

PLEASE DOWNLOAD AND REVIEW THE CANDIDATE INFORMATION BULLETIN BEORE REGISTERING FOR THE EXAM

VIEW CANDIDATE INFORMATION BULLETIN

After you have reviewed the bulletin, click the link below to register for the exam. You will need to create an account before you can register.

Please click this link to register for the exam online.

You will be required to submit proof that you qualify for the exam. You must provide the following:

Proof of hours worked
A copy of your backflow certification
A copy of your driver’s license>

Please upload all documentation to PSI’s Client Portal after you have created your account. If you need technical support please call PSI at 855-898-0715 for assistance.

If you have any questions regarding the application process, please send an email DLOPLplumbing-labor@maryland.gov or call 410-230-6379 to speak to the Board Administrator.

If you feel that you qualify for a reciprocal license, view more information on how to apply.