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Drinking Water Fact Sheet: Radon

Radon is a naturally occurring radioactive gas formed by uranium and radium in rocks and soil. Most radon seeps into the air of buildings through sump holes, floor drains, cinderblocks, dirt floors, and cracks in foundations and concrete floors. However, radon can also enter homes via the drinking water supply. Groundwater dissolves radon from uranium-containing rock, resulting in generally higher concentrations of radon in well water compared with drinking water derived from surface waters, such as rivers and lakes.

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In the Spotlight

  • September 20, 2013
    Conference: Climate Smart Southwest
    Build new and fortify existing cross-cultural, community, and governmental partnerships to educate and engage community action to address the anticipated public health impacts of climate change in the Southwest, September 20-21.