26%tests ≥ 4 pCi/L
112tests on record
2.8median pCi/L
Zone 2EPA zone (1993 prediction)

Test results in Brown County

ResultShareEPA guidance
Below 2 pCi/L38%Below EPA's levels
2 to 4 pCi/L37%Consider fixing
4 pCi/L or more26%EPA recommends fixing

What the data shows

Where Brown 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 Brown County compares

Brown County has the lowest share of high results among its neighboursShare of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017 · whisker: 95% range
Bartholomew County49%Morgan County44%Johnson County39%Monroe County34%Jackson County27%Brown County26%Indiana 39%
Data table
AreaTests ≥ 4 pCi/LTests
Bartholomew County49%1,707
Morgan County44%226
Johnson County39%556
Monroe County34%2,375
Jackson County27%88
Brown County26%112
Indiana (92 counties)39%43,148

Same source as Brown County.

What it means for your home

About 1 in 4 results in Brown 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: 112. 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