What EPA's radon map says about Saline County

EPA's own radon map rates Saline County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally, Saline County ranks higher in radon potential than 90% of rated counties (the 90th percentile).

How Saline County compares

About 53,459 people live in Saline County, Kansas, spread over 720.242 square miles. Averaged across its land area, Saline County runs about 74 people per square mile. Among counties sharing Saline County's EPA zone, it outranks 72% of them by population. Saline County falls in EPA Radon Region 7, one of 412 counties nationally EPA assigns to that same geologic province.

Why the zone isn't the answer by itself

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Saline County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. Some Saline 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.

If Saline County tests above the action level

Mitigation cost doesn't depend on Saline 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

Saline County's test kit answers today; a Airthings radon monitor keeps answering for Saline 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

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.