34%tests ≥ 4 pCi/L
2,375tests on record
2.8median pCi/L
Zone 1EPA zone (1993 prediction)

Test results in Monroe County

ResultShareEPA guidance
Below 2 pCi/L34%Below EPA's levels
2 to 4 pCi/L32%Consider fixing
4 pCi/L or more34%EPA recommends fixing

What the data shows

Where Monroe County sits among Indiana's 92 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 Monroe County compares

Monroe County ranks 4 of 7 among its neighboursShare of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017 · whisker: 95% range
Morgan County44%Owen County39%Lawrence County36%Monroe County34%Greene County33%Jackson County27%Brown County26%Indiana 39%
Data table
AreaTests ≥ 4 pCi/LTests
Morgan County44%226
Owen County39%110
Lawrence County36%267
Monroe County34%2,375
Greene County33%49
Jackson County27%88
Brown County26%112
Indiana (92 counties)39%43,148

Same source as Monroe County.

What it means for your home

About 1 in 3 results in Monroe 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: 2,375. 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