What EPA's radon map says about Barber County

EPA's own radon map rates Barber County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Nationally, Barber County ranks higher in radon potential than 35% of rated counties (the 35th percentile).

How Barber County compares

About 4,070 people live in Barber County, Kansas, spread over 1,134.075 square miles. Averaged across its land area, Barber County runs about 4 people per square mile. Among counties sharing Barber County's EPA zone, it outranks 7% of them by population. EPA's geology-based Region 7 groups Barber County with 411 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Barber County's predicted average falls between EPA's 4 pCi/L action level and the national indoor average of about 1.3 pCi/L (outdoor air runs roughly 0.4 pCi/L). A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Barber County — testing is the only way to know an individual home's actual level.

Next steps for a home in Barber County

Mitigation cost doesn't depend on Barber County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Kansas's state radon program

Barber County's test kit answers today; a Airthings radon monitor keeps answering for Barber County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. Code RADONZONE-10OFF takes 10% off at checkout.

More on how this number was built

Barber County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.