What EPA's radon map says about Lac qui Parle County

EPA's own radon map rates Lac qui Parle County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. That puts Lac qui Parle County in the 73rd percentile nationally for radon potential — higher than 73% of the counties EPA has rated.

Where Lac qui Parle County sits nationally

About 6,636 people live in Lac qui Parle County, Minnesota, spread over 765.021 square miles. Population density there runs about 9 people per square mile. Among counties sharing Lac qui Parle County's EPA zone, it outranks 19% of them by population. EPA's geology-based Region 5 groups Lac qui Parle County with 523 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Where the national indoor average runs about 1.3 pCi/L, Lac qui Parle County's Zone 1 rating puts its predicted county average above EPA's 4 pCi/L action level itself. EPA's guidance doesn't change because of a Zone 1 label: test the house. What changes is the reason to not put it off in Lac qui Parle County specifically.

Next steps for a home in Lac qui Parle County

Mitigation cost doesn't depend on Lac qui Parle 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

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

More on how this number was built

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