Delaware, OK Radon Mitigation and Testing

Q: What EPA Radon Zone is Delaware in?

Delaware is in Nowata County, EPA Zone 3.

Q: How much does radon mitigation cost in Delaware?

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

Nowata County

EPA Zone 3

Found in Nowata County in northeastern Oklahoma, Delaware sits in EPA Zone 3 where radon levels are generally lower than national averages. However, the area's diverse geological formations and limited local testing data for zip code 74027 mean individual homes can still experience elevated readings. Homeowners should consider radon testing, particularly in properties with basements or tight construction that could trap radon gas.

Delaware, OK Radon Mitigation

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

Delaware, OK Radon Testing

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

Delaware Radon Facts

Key details about the radon risk profile for Delaware and the 74027 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Nowata County, OK

Zip Code

74027

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Delaware and the 74027 zip code are located in Nowata County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Delaware, OK

What EPA Radon Zone is Delaware in?

Delaware and the 74027 zip code are in Nowata County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Delaware?

Radon mitigation in Delaware 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 Delaware?

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 Oklahoma

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

City	Avg User Radon Level	Submissions
Tulsa	8.14 pCi/L	7
Oklahoma City	7.00 pCi/L	1
Edmond	5.00 pCi/L	1