Radon Professional Certification
How to become certified in professional radon services
The State of Wisconsin does not require professionals conducting radon testing or mitigation services to hold a license or certificate of proficiency. The Department of Health Services (DHS) recommends professionals become nationally certified through an Environmental Protection Agency (EPA)-recognized third-party credentialing organization. Currently, there are two such organizations: the National Radon Proficiency Program (NRPP) and the National Radon Safety Board (NRSB). Both the NRPP and NRSB offer several different types of radon proficiency certifications. Follow these steps to become nationally certified with the NRPP or NRSB.
Step 1: Take a certification course
Complete a Measurement, Mitigation or Combined Measurement and Mitigation Course. Note: Measurement coursework is often useful, and in some cases required, before beginning mitigation coursework.
Find a Radon Measurement Certification Course
Step 2: Pass a national measurement or mitigation exam (or both)
Both NRPP and NRSB offer certification exams. Professionals can choose to become certified in radon measurement and/or radon mitigation.
Step 3: Apply for certification
Complete the appropriate certification application.
Once certified, maintain your certification by enrolling in continuing education (CE).
See the following lists of CE opportunities offered both online and in-person.
Continuing education (CE) opportunities
CE credits are required for maintaining NRPP and NRSB certifications. View the following lists of CE opportunities:
- NRPP - Category I Approved CE Providers list
- NRPP - Category II CE Activities list
- NRSB - CE Course list
Conferences
Indoor Environments 39th Annual Radon and Vapor Intrusion Symposium | October 26-29, 2025 | Forth Worth, Texas
National Radon Consensus Standards
Both NRPP and NRSB certifications follow American National Standards Institute (ANSI) accredited Academy of Radon Scientists and Technologist (AARST) standards. These standards are free for online-viewing and provide guidance on radon measurement and mitigation efforts of all building types. We encourage the use of these current codes and standards to help ensure public health protection.
Questions?
Experts are available statewide to answer your questions and provide test kits to the general public. Get in touch with a radon expert by contacting your regional Radon Information Center or by calling 1-888-LOW-RADON (1-888-569-7236).