DuPage County Illinois Radon Inspections

DuPage County, IL homes have been assigned with a Zone 2 designation (Moderate risk) in terms of radon levels found in homes. Zone 2 suggests that the majority homes contain a moderate amount of radon (2.0-4.0 pCi/L) Readings over 4.0 are considered high levels of radon where action is highly recommended to lower emission levels.

DuPage county homes in towns such as Lisle, Wheaton, Naperville and Glen Ellyn have been found to average over 5.0 pCi/L of radon gas (considered high). If you own a home or are thinking of purchasing a home in DuPage county, you may wish to consider ordering a radon inspection to safeguard it’s inhabitants.

DuPage County Radon Levels by City

Below you can find information on the expected radon levels in the average home by city/zip code in DuPage County as reported by the Illinois Emergency Management Agency. Levels of pCi/L that exceed 4.0 are considered to be high and dangerous by the Environmental Protection Agency.

CityZip CodeNo. Sites TestedAvg. pCi/L
Addison601011735 pCi/L
Aurora6050210403.9 pCi/L
Aurora605049174 pCi/L
Bartlett601034324 pCi/L
Bensenville60106494.4 pCi/L
Bloomingdale601082965.2 pCi/L
Bolingbrook60440282.8 pCi/L
Carol Stream601883953.8 pCi/L
Clarendon Hills605144534.5 pCi/L
Darien605615005.1 pCi/L
Downers Grove605158685.5 pCi/L
Downers Grove605166345.5 pCi/L
Elgin601200N/A
Elmhurst6012611814.2 pCi/L
Glen Ellyn6013713925.3 pCi/L
Glendale Heights601391312.9 pCi/L
Hanover Park60133682.8 pCi/L
Hinsdale6052110124.6 pCi/L
Itasca601431014.6 pCi/L
Lemont6043986 pCi/L
Lisle605327596.1 pCi/L
Lombard601487234.8 pCi/L
Medinah60157435.8 pCi/L
Naperville6054019486 pCi/L
Naperville6056512455.6 pCi/L
Naperville6056311635.2 pCi/L
Naperville605644484 pCi/L
Oak Brook605233095 pCi/L
Roselle601722224.5 pCi/L
Saint Charles60174291.8 pCi/L
Villa Park601813233.5 pCi/L
Warrenville605552135.4 pCi/L
Wayne60184616.7 pCi/L
West Chicago601855125 pCi/L
Westmont605594125 pCi/L
Wheaton6018911805.8 pCi/L
Wheaton601879135.2 pCi/L
Willowbrook605274484.9 pCi/L
Winfield601903484.8 pCi/L
Wood Dale60191653.9 pCi/L
Woodridge605175424.2 pCi/L