IS RADON PREVALENT IN YOUR AREA?
Dangerous levels of radon gas concentrations have been found statewide. The Illinois Emergency Management Agency (IEMA) gathers information on radon activity throughout the state. IEMA offers two options to view radon levels. One is non-flash based search the other is a flash based Illinois Radon Map.
Disclaimer and Purpose. The Illinois radon map is NOT intended to be used to determine if a home in a given county or zip code should be tested for radon.
ALL HOMES SHOULD BE TESTED
All homes should be tested for radon regardless of geographic location. Variations in the soil can differ even in side-by-side properties. IEMA & The EPA recommend regular radon testing.
The data presented on the IEMA site is taken from annual reports submitted by licensed measurement and mitigation professionals. The measurement data includes calendar years 2003 - 2011. The mitigation data includes calendar years 2005 - 2011. The measurement data includes only the highest measurement for each address that was submitted. Data collected from measurements performed by homeowners will be included in future updates of the website.