World Health Organization Torrent What Is The Current USA Limit For Radon Gas? Is This Regulated By The EPA Or World Health Organization?

What is the current USA limit for radon gas? Is this regulated by the EPA or World Health Organization? - world health organization torrent

My inspector told me that the Environmental Protection Agency (EPA) and do not regulate how the framework is radon gas, but now the World Health Organization (Who.is) Is he right?