What EPA's radon map says about Carver County

Carver County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Nationally that's the 94th percentile for radon potential — Carver County outranks 94% of every county EPA has rated.

Carver County by the numbers

About 112,628 people live in Carver County, Minnesota, spread over 353.878 square miles. Population density there runs about 318 people per square mile. Among counties sharing Carver County's EPA zone, it outranks 83% of them by population. Geologically, Carver 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

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

Mitigation cost doesn't depend on Carver 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 Minnesota's state radon program

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

The methodology guide shows exactly which EPA and Census sources feed Carver County's numbers. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.