radon and groundwater in York 4

https://touch-wiki.win/index.php/Understanding_Radon_and_Groundwater_in_York:_A_Homeowner%27s_Guide

Radon and groundwater in York is a quietly serious topic. As radon, a radioactive gas from uranium decay, dissolves easily in water, it can seep into private wells and household supplies. Since York County sits atop granite-rich bedrock known for higher radon levels, many residents test their water to avoid exposure. While municipal systems are monitored, well owners often need to check and treat their own sources.