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Radon by Town

Every home has radon, every town has homes that have high radon levels. Some towns have higher instances of elevated levels than others, but all towns have homes that test high.

Data by Town

This data is for general interest only and should not be used as an indicator of whether or not any particular home in any particular town will have high radon levels. We have our data from over 16,000 tests we've performed since 1999. Each town is listed with a range of the sample size, the percentage of homes that tested at or above 4.0pCi/l, and the highest level found there.

All homes should be tested for radon.

Status Report for Radon in Illinois 2006

The IEMA DNS Radon Program has collected and analyzed all the data taken by measurement professionals from 2003 - 2005.

This is a fascinating study of their findings and is not overly technical reading.