youtube radon mitigation
https://www.google.com/maps/d/u/1/edit?mid=13vaGCM6XDFQPDckIMSd6_hUf5PWr5EvC&ll=36.14683223511943%2C-86.76655149999999&z=10
You ought to contact your provider if you are worried about radon as well as your water comes from a public water supply. You can take actions to lower them if radon levels in your residence are high.