radon levels in PA homes

https://golf-wiki.win/index.php/Radon_Contractor_York_PA_Services_Expand_to_Meet_Growing_Demand_for_Home_Safety_Testing

Radon levels in PA homes are a bigger concern than many realize, especially in areas with lots of granite or old mine tunnels. This colorless, odorless gas can seep in through cracks and sump pumps, building up to dangerous concentrations. It's smart to test your home every few years, particularly in the basement or lowest living space. Mitigation systems, like vent pipes and fans, can reduce levels and the risk of lung cancer over time.