National Radon Proficiency Program

In addition to meeting state licensing requirements, it is recommended that radon professionals attain certification, registration, and/or membership in nationally recognized organizations. One of the two most reputable organizations is the National Radon Proficiency Program (NRPP).


The American Association of Radon Scientists and Technologists' (AARST) radon certification program is known as the National Radon Proficiency Program (NRPP).

To become certified as a residential measurement provider with the NRPP, you must have attended an approved entry level measurement course (minimum 16 hours) and passed the AARST-NRPP radon measurement exam within the last 12 months.

Achieving this certification qualifies you to place, retrieve, and interpret the results of a measurement device analyzed by an AARST-NRPP certified Analytical Laboratory. This credential is for residential settings and is appropriate for individuals performing home inspection services.

NRPP Certification

Specific information on achieving NRPP Certification can be obtained from their website (  This site includes information on applying for certification as a radon measurement or remediation technician or specialist.