Radon in water is particularly a concern for which type of homes?

Radon in water is particularly a concern for homes with a private well because private wells often draw groundwater that may contain radon gas. Unlike city water supplies, which typically undergoes extensive treatment and monitoring for contaminants including radon, private wells can come from sources that are not regulated in the same way.

Radon is a naturally occurring radioactive gas that can dissolve in groundwater, and if a home uses water from a well that is high in radon, the gas can be released into the air during water usage, such as showering or washing dishes. This can increase the risk of radon exposure for occupants.

While homes in low-lying areas might have some correlation with radon due to the geological factors influencing radon emanation, it is not a direct relationship as with water quality. Newly constructed homes don't inherently have a higher or lower risk for radon in water unless they are also dependent on well water. Lastly, city water supply systems are generally treated and monitored for radon among other contaminants, making them less of a concern in comparison to private wells.