Onaga, KS Radon Mitigation and Testing

Q: What EPA Radon Zone is Onaga in?

Onaga is in Pottawatomie County, EPA Zone 1.

Q: How much does radon mitigation cost in Onaga?

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

Pottawatomie County

EPA Zone 1

Situated in rural Pottawatomie County within zip code 66521, Onaga sits in northeastern Kansas where glacial deposits over limestone bedrock contribute to the EPA Zone 1 classification indicating high radon potential. The area's geological conditions are similar to those found throughout the Kansas-Nebraska border region known for elevated radon levels. Testing data for this small community is limited, making individual home testing particularly important given the zone designation.

Onaga, KS Radon Mitigation

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

Onaga, KS Radon Testing

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

Onaga Radon Facts

Key details about the radon risk profile for Onaga and the 66521 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Pottawatomie County, KS

Zip Code

66521

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Onaga and the 66521 zip code are located in Pottawatomie 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 Onaga, KS

What EPA Radon Zone is Onaga in?

Onaga and the 66521 zip code are in Pottawatomie 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 Onaga?

Radon mitigation in Onaga 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 Onaga?

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