What EPA's radon map says about Switzerland County

Switzerland County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Nationally, Switzerland County ranks higher in radon potential than 40% of rated counties (the 40th percentile).

Where Switzerland County sits nationally

About 9,988 people live in Switzerland County, Indiana, spread over 220.668 square miles. Population density there runs about 45 people per square mile. Among counties sharing Switzerland County's EPA zone, it outranks 21% of them by population. Geologically, Switzerland County is grouped into EPA Region 5 alongside 523 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Switzerland County's Zone 2 prediction. Nothing about a Zone 2 label lowers the case for testing in Switzerland County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Switzerland County

Mitigation cost doesn't depend on Switzerland 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 Indiana's state radon program

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

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. Whatever zone Switzerland County carries, the zone explainer covers what it does and doesn't tell you about any one house.