Dropping at the root since some threads are talking about radon and whether it’s based on region. This is the EPA map for radon risks (zones) in the US: https

Dropping at the root since some threads are talking about radon and whether it’s based on region. This is the EPA map for radon risks (zones) in the US: https://www.epa.gov/system/files/documents/2024-05/radon-zones-map_text_link.pdf https://www.epa.gov/system/files/documents/2024-05/radon-zon...