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Radon is a radioactive gas you can't see, taste or smell.
It's found throughout the United States and can move up through
the ground and into a home through cracks and holes in the foundation,
building up to high levels.
Radon can get into indoor air when released from
tap water through showering, washing dishes and other household
activities, and is sometimes associated with groundwater. The district
tests wells for radon as they are placed into service. In most cases,
radon entering the home through tap water will be only a small
source compared to radon entering the home through soil.
Radon is a known human carcinogen. Breathing air
containing radon can lead to lung cancer. Drinking water containing
radon also may cause increased risk of stomach cancer.
If you're concerned about radon in your home, test
your home's air—it's inexpensive and easy with an over-the-counter
kit. If the level of radon in your air is 4 picocuries per liter
of air (pCi/l) or higher, you should find the source of the problem
and fix it. There are simple ways to fix a radon problem that aren't
too costly.
For more information, call the EPA's Radon Hotline
at 800-SOS-Radon or see their
frequently asked questions about radon.
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