High radon levels can put your health at risk

Nearly 40 percent of Idaho homes that have been tested for radon showed unsafe levels. Radon is a problem in Idaho and high levels have been found in every county. Long term exposure to high levels of radon can increase your risk of developing lung cancer. The good news is radon problems can be fixed with mitigation.

Radon is a naturally occurring radioactive gas that you can’t see, smell or taste. Radon rises up from the soil and invades homes and buildings through crawlspaces, foundation cracks and openings. When radon gets trapped indoors it can reach harmful levels. Radon is the second leading cause of lung cancer, with the Environmental Protection Agency estimating that radon causes 21,000 deaths in the United States each year.

Every home in Idaho should be tested for radon. The only way to know if your home has high levels of radon is to test for it, with winter being the best time to do that.  Testing is easy, simple and inexpensive.  Visit www.radonidaho.org to order a radon test kit with easy to follow instructions for $9.95. This covers the cost for shipping and lab analysis. For more information call the Idaho CareLine at 211.

Idaho Radon Rates
City Zip Code % of Tested Homes
with Unsafe Levels
Blackfoot 83221 44%
Boise 83702 36%
Challis 83226 61%
Coeur d’Alene 83815 64%
Idaho Falls 83401 42%
McCall 83638 32%
Mountain Home 83647 50%
Orofino 83544 35%
Pocatello 83202 51%
Rexburg 83440 63%
Salmon 83467 56%
Sun Valley 83340 60%

The Radon Program is part of the Department of Health and Welfare’s Division of Public Health. Learn more and view radon levels in your zip code at Idaho at

Jim Faust, Radon Program Manager
(208) 334-5717

 Tom Shanahan, Public Information Officer
(208) 334-0668

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