sump pit radon seal 5

https://yorkparadonprosradonwellsite.urbanvellum.com/posts/understanding-radon-in-well-water-what-york-county-homeowners-should-know

A sump pit radon seal is a cover you install over your basement sump pit to block radon gas from seeping into your home. It usually comes as a heavy-duty lid with a rubber gasket that creates an airtight barrier, sometimes with a vent fitting so your sump pump can still work properly. Without one, that open pit can act like a chimney for soil gases, pulling radon right into your living space. It's a simple, effective fix that can make a real difference in your indoor air quality.