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Celebrate Nuclear Abolition Day by contacting Secretary of State John Kerry.

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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  • Reduce Carbon Pollution -- Support a Strong EPA Rule

    Guided by the values and expertise of medicine and public health, Physicians for Social Responsibility works to protect humanity from the gravest threats to health and survival. Right now, you can make a difference by registering your comments on the EPA's new Clean Power rule to limit carbon from existing coal-burning power plants. Just click the button to get started.

  • U.S. House bill fails to protect from chemicals

    Tell Congress you won’t support phony chemicals policy reform -- only real, health-protective reform.

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In the Spotlight

  • July 17, 2014
    Our Best Opportunity to Cut Climate Change
    We need you to take action now! Tell the EPA that its proposed rule to cut carbon pollution from power plants Is vitally important and on the right track – but can be strengthened.