radon levels in York PA 5

https://list-wiki.win/index.php/Radon_and_Groundwater_in_York:_What_Homeowners_Need_to_Know

Radon levels in York PA can be concerning because the area sits on top of uranium-rich bedrock. Many older homes around York have basements with cracks where this radioactive gas seeps in, testing recommended by the local health department.