21%tests ≥ 4 pCi/L
82tests on record
1.7median pCi/L
Zone 2EPA zone (1993 prediction)

Test results in Saline County

ResultShareEPA guidance
Below 2 pCi/L59%Below EPA's levels
2 to 4 pCi/L21%Consider fixing
4 pCi/L or more21%EPA recommends fixing

What the data shows

Where Saline 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 Saline County compares

Saline County ranks 4 of 8 among its neighboursShare of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017 · whisker: 95% range
Gallatin County33%Hamilton County23%Hardin County22%Saline County21%Franklin County20%Johnson County15%Williamson County13%Pope County0%Illinois 43%
Data table
AreaTests ≥ 4 pCi/LTests
Gallatin County33%6
Hamilton County23%30
Hardin County22%9
Saline County21%82
Franklin County20%199
Johnson County15%48
Williamson County13%601
Pope County0%7
Illinois (102 counties)43%108,909

Same source as Saline County.

What it means for your home

About 1 in 5 results in Saline 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.

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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: 82. 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