What EPA's radon map says about Haskell County

EPA's own radon map rates Haskell County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally that's the 69th percentile for radon potential — Haskell County outranks 69% of every county EPA has rated.

Where Haskell County sits nationally

About 3,591 people live in Haskell County, Kansas, spread over 577.521 square miles. Population density there runs about 6 people per square mile. Among counties sharing Haskell County's EPA zone, it outranks 9% of them by population. Geologically, Haskell County is grouped into EPA Region 7 alongside 411 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

Outdoor air nationally averages about 0.4 pCi/L, indoor air about 1.3 pCi/L — Haskell County's Zone 1 prediction clears both of those and EPA's fix-it threshold besides. Some Haskell County homes will test comfortably under the action level despite the county's Zone 1 rating — the only way to know which kind of home you have is an actual test.

Next steps for a home in Haskell County

Mitigation cost doesn't depend on Haskell 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

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

More on how this number was built

The methodology guide shows exactly which EPA and Census sources feed Haskell County's numbers. Whatever zone Haskell County carries, the zone explainer covers what it does and doesn't tell you about any one house.