About NRPP

AARST is a professional association consisting of more than 1,000 members who are dedicated to saving lives by reducing radon exposure. In addition to spearheading public policy and technical standards initiatives designed to open new markets and business opportunities, AARST is committed to increasing public awareness and action.


Recognized as the nation’s leading certification program for radon professionals, the National Radon Proficiency Program (NRPP) provides radon professionals the opportunity to become certified in measurement, mitigation and as radon laboratories. Maintaining NRPP credentials is an ongoing effort that requires documented evidence of competency and performance representing a high level of skill and expertise.

AARST Mission Statement

AARST is a nonprofit, professional organization of members who are dedicated to the highest standard of excellence and the ethical performance of radon measurement, mitigation and transfer of information for the benefit of members, consumers and the public at large.


NRPP Code of Ethics

Certified professionals abide by the NRPP Code of Ethics and must meet Continuing Education  and ongoing proficiency demonstrations to maintain their certification. The NRPP operates under the direction of an independent Policy Advisory Board.

AARST Board Of Directors

The BOD consists of four Officers, 10 nationally elected Directors and 10 local Chapter Presidents. The Board meets twice a year in person and each month via web conference.  Attendance by Nationally Elected members of the Board at all meetings is expected.


 Policy Advisory Board (PAB)

The NRPP PAB is an independent board authorized by the AARST to develop consensus policies and procedures for the NRPP credentialing program.  Made up of a cross-section of radon  stakeholders, the PAB is committed to fairness, access, balance and transparency in the formulation of credentialing policy and its implementation. 

AARST Code of Ethics

AARST Members recognize the Code as a set of dynamic principles guiding their conduct in relationships with colleagues,  members of other professions, and with the public. Any member found in breach of this Code is subject to disciplinary action, which may include expulsion. This is a living document and, as such, shall be reviewed for content and applicability by the AARST Ethics Committee on an annual basis.



AARST Consortium on National Radon Standards

Accredited by the American National Standards Institute (ANSI), the ISO coordinating agency in the U.S., the Consortium utilizes a recognized consensus standard development process to develop radon technical standards.  It is managed by an independent Executive Stakeholders Committee and Chair that oversee stakeholder committees representing 12 stakeholder groups, committees and subcommittees.  The decision-making process of the consortium is based on published bylaws and procedures as well as public review, internal audits and final ANSI approval. Learn more.



 Standard Operating Procedures