Oregon, MO Radon Mitigation and Testing

Q: What EPA Radon Zone is Oregon in?

Oregon is in Holt County, EPA Zone 1.

Q: How much does radon mitigation cost in Oregon?

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

Holt County

EPA Zone 1

Found in Holt County in northwestern Missouri, Oregon sits within EPA zone 1 where the region's glacial deposits can produce elevated radon levels in residential properties. The community's rural housing stock in zip code 64473 features older farmsteads and newer homes, many with basements where radon accumulation is most likely. With testing data currently limited, homeowners should conduct their own radon measurements to determine individual exposure risk.

Oregon, MO Radon Mitigation

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

Oregon, MO Radon Testing

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

Oregon Radon Facts

Key details about the radon risk profile for Oregon and the 64473 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Holt County, MO

Zip Code

64473

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Oregon and the 64473 zip code are located in Holt 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 Oregon, MO

What EPA Radon Zone is Oregon in?

Oregon and the 64473 zip code are in Holt 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 Oregon?

Radon mitigation in Oregon 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 Oregon?

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 Missouri

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

City	Avg User Radon Level	Submissions
Troy	8.50 pCi/L	4
Lees Summit	7.00 pCi/L	3
Columbia	3.00 pCi/L	2
House Springs	7.00 pCi/L	1
Kansas City	7.00 pCi/L	1
Springfield	7.00 pCi/L	1
Independence	5.00 pCi/L	1
Wentzville	No submissions	0