Radon Map - Counties

Click on a county below to learn more about radon levels in that area.

High Risk of Radon Zone 1 > 4 pCi/L
High Risk of Radon Zone 2 - 2 -4 pCi/L
High Risk of Radon Zone 3 < 2pCi/L

Idaho Radon Map Elmore County Washington County Teton County Payette County Nez Perce County Minidoka County Madison County Kootenai County Jefferson County Idaho County Gooding County Gem County Franklin County Canyon County Boundary County Bingham County Benewah County Bear Lake County Bannock County Adams County Lemhi County Custer County Twin Falls County Lincoln County Oneida County Clark County Fremont County Camas County Blaine County Butte County Caribou County Power County Clearwater County Shoshone County Owyhee County Bonner County Jerome County Cassia County Bonneville County Lewis County Latah County Valley County Boise County Ada County