National Radon Safety Board - NRSB
The NRSB seeks to encourage the hightest standards of practice and integrity in radon testing and services


Insurance for Certified Professionals
E&O/General Liability Insurance
Available for NRSB Members

Radon Action Month

EPA Indoor Air Quality

World Health Organization Handbook (PDF) >>

Some states have radon certification or registration programs. Please contact the state's radon program to get a complete listing of who is able to legally provide services in your area.

State Radon Program



Find a Professional

You can search for an NRSB certified radon professional by certification type, last name, company, state, zip code and mileage radius. To use the search function click below.

see more information






For Professionals
This section contains everything you need to know to become certified with the NRSB and/or renew your certification.  The NRSB certification program offers independent certification and accreditation.
For Consumers
An NRSB certified radon professional provides the public assurance in testing and mitigating your home.