The National Radon Proficiency Program (NRPP) serves as the credentialing and certification division of AARST and is recognized as the nation’s leading certification program for radon professionals.

Currently, AARST-NRPP has over 2,600 certified professionals qualified in measurement, mitigation, and as radon laboratories.


AARST-NRPP  Certification is an ongoing effort that requires bi-annual documentation of expertise and performance, representing a high level of skill, knowledge and professionalism.