About Us

What is the National Radon Proficiency Program (NRPP)?

The NRPP provides certification credentials for professional radon testers and mitigators. As an independent administrative program of the American Association of Radon Scientists and Technologists, Inc. (AARST), the NRPP holds the ISO 17024 ANAB accreditation and is governed by a Certification Council consisting of radon industry stakeholders who are responsible for credentialing policies and procedures.

The NRPP Credential Enables You to:


  • Increase
    your Marketability and Competitive Advantage
    . Having an NRPP
    Certification helps you to standout and showcase your experience in
    being responsible and in charge of radon measurement and/or
    mitigation services, and that you can provide resolutions in your
    client’s best interests.

  • Display
    your Competency and Professionalism
    . The NRPP Certification is a
    sign of professional achievement and will help you validate to
    clients and supervisors that you’re dedicated to quality
    workmanship and that you are part of an elite group of qualified
    industry experts.

  • Validate
    Your Credibility.
    As an NRPP-Certified Professional, you are
    required to maintain your standing by staying up to date with
    industry best practices, abiding by ANSI-AARST Standards of Practice
    and adhering to the NRPP code of ethics.

More than 3,000 professionals have earned the right to call themselves an NRPP-Certified Radon Measurement or Mitigation Provider. They recognize the value the NRPP distinction brings to their careers and the confidence it provides their clients.

Statement of Impartiality

The NRPP Certification Council and staff understand the importance of impartiality and conflicts in the management of certification activities. When undertaking dealings with candidates and participants, all involved in the certification process will maintain a high level of ethical conduct and avoid conflicts of interest in connection with the performance of their duties. There shall be an avoidance of any actions and or commitments that might create the appearance of:


  • Giving
    preferential treatment.

  • Using
    positions for personal gain.

  • Impeding
    efficiency.

  • Losing
    independence or impartiality.

  • Affecting
    adversely the confidence of NRPP constituents in the integrity of
    certification operations.

The Certification Council and staff ensure that in their dealings with constituents that they are and will remain impartial.

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