Stilwell, KS Radon Mitigation and Testing

Q: What EPA Radon Zone is Stilwell in?

Stilwell is in Johnson County, EPA Zone 1.

Q: How much does radon mitigation cost in Stilwell?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Johnson County

EPA Zone 1

Stilwell occupies an affluent section of Johnson County in the Kansas City Metro area, where glacial loess deposits over limestone bedrock can facilitate radon accumulation. The community features upscale suburban homes built primarily from the 1970s onward, most with full basements. While testing data for zip code 66085 remains limited, the geological conditions warrant regular radon monitoring for all residents.

Stilwell, KS Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Stilwell, KS Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Stilwell Radon Facts

Key details about the radon risk profile for Stilwell and the 66085 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Johnson County, KS

Zip Code

66085

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Stilwell and the 66085 zip code are located in Johnson County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Stilwell, KS

What EPA Radon Zone is Stilwell in?

Stilwell and the 66085 zip code are in Johnson County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Stilwell?

Radon mitigation in Stilwell typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Stilwell?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Kansas

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Topeka	6.00 pCi/L	1
Overland Park	No submissions	0