The National Radon Proficiency Program (NRPP) website provides an updated list of certified measurement operators and mitigators by state. It also includes a checklist for consumers to ensure that they hire the certified individual that best fits their needs. The site provides training information for those seeking to become certified in measurement or mitigation.
The American Society of Home Inspectors (ASHI) website allows you to become a member of North America's largest, oldest and most recognized organization for home inspectors. There is information for home buyers, sellers, and professional home inspectors. You can also search for a home inspector.
The Environmental Protection Agency (EPA) website contains information about radon, air quality, water quality, and other issues regarding human health. The site covers a variety of topics and gives information about your specific location. An electronic copy of all the publications the EPA publishes can also be accessed on their website.International Association of Certified Homes Inspectors
The International Association of Certified Homes Inspectors (InterNACHI) is the largest home inspector association in the world. They offer home inspection training via online and video courses that have been approved and accredited by dozens of state and governmental agencies, including the State of Tennessee. They offer an approved online Radon Inspection Course.