Radon in Well Water: What It Means for Air Testing

Radon gas dissolved in groundwater can be released into indoor air during water use — showers, laundry, dishwashing — but for most homes, soil gas entering through the foundation is the dominant source of indoor radon, which is what a standard air test measures.

A standard indoor air test still applies and is the right starting point. Homes on private wells with specific water-quality concerns should raise them directly when booking a test so testing can be scoped appropriately.