58%tests ≥ 4 pCi/L
4,954tests on record
4.8median pCi/L
Zone 1EPA zone (1993 prediction)

Test results in Lancaster County

ResultShareEPA guidance
Below 2 pCi/L21%Below EPA's levels
2 to 4 pCi/L20%Consider fixing
4 pCi/L or more58%EPA recommends fixing

What the data shows

Where Lancaster County sits among Nebraska's 93 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 Lancaster County compares

Lancaster 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
Butler County79%Seward County75%Saunders County73%Otoe County70%Gage County70%Saline County69%Cass County66%Johnson County62%Lancaster County58%Nebraska 59%
Data table
AreaTests ≥ 4 pCi/LTests
Butler County79%483
Seward County75%914
Saunders County73%589
Otoe County70%402
Gage County70%567
Saline County69%242
Cass County66%620
Johnson County62%74
Lancaster County58%4,954
Nebraska (93 counties)59%42,782

Same source as Lancaster County.

What it means for your home

More than half of all results in Lancaster 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: 4,954. 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