passive radon mitigation

https://www.google.com/maps/d/u/9/1t1cYTM2iK36WUmxOXh63cbfQdoRrlQMo&ll=36.16574394382697%2C-86.89803435546878&z=12

In scenarios where high radon concentrations might be anticipated in drinking-water, it is sensible to gauge radon concentrations. Effective as well as uncomplicated techniques exist to reduce the concentration