38%tests ≥ 4 pCi/L
116tests on record
3.2median pCi/L
Zone 1EPA zone (1993 prediction)

Test results in Edgar County

ResultShareEPA guidance
Below 2 pCi/L29%Below EPA's levels
2 to 4 pCi/L33%Consider fixing
4 pCi/L or more38%EPA recommends fixing

What the data shows

Where Edgar County sits among Illinois's 102 counties with dataEach dot is a county's share of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017
0%20%40%60%80%

How Edgar County compares

Edgar County ranks 7 of 8 among its neighboursShare of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017 · whisker: 95% range
Champaign County50%Vermilion County49%Vigo County, Indiana44%Douglas County43%Vermillion County, Indiana42%Coles County39%Edgar County38%Clark County22%Illinois 43%
Data table
AreaTests ≥ 4 pCi/LTests
Champaign County50%8,593
Vermilion County49%379
Vigo County, Indiana44%455
Douglas County43%234
Vermillion County, Indiana42%24
Coles County39%295
Edgar County38%116
Clark County22%77
Illinois (102 counties)43%108,909

Same source as Edgar County.

What it means for your home

About 1 in 3 results in Edgar County were at or above 4 pCi/L, where the EPA recommends a fix. Only a test shows your own home's level.

Levels in pCi/L from the EPA. The WHO reference level is 100 Bq/m³, about 2.7 pCi/L.

Test your home

Start with a short-term test (2–90 days) and confirm a result of 4 pCi/L or more with a second test. EPA guide

Sponsored: we earn a commission on purchases through these links. We haven't tested Airthings monitors yet.

Prefer a digital monitor? See Airthings radon monitors, or enter code radonbycounty-10OFF at their discount store for 10% off.

Fixing high radon

No local job records yet. National range: $800–$2,500, average $1,200 (EPA, 2003). Cost guide →

About this data

Source: Radon test results from laboratories (CDC Environmental Public Health Tracking Network). Period: 2008–2017. Tests: 116. Read the methodology →

These are voluntary and real-estate tests, not a random sample of homes, so they describe tested homes rather than every home.

About this page

Published by Ray Roman, editor of Radon by County. Figures are loaded from the cited source and spot-checked against it. Editorial policy · About us