Dayton, OH Radon Mitigation and Testing

Q: What is the average radon level in Dayton, OH?

Based on 1 user-submitted tests, the average radon level is 20.00 pCi/L.

Q: What EPA Radon Zone is Dayton in?

Dayton is in Montgomery County, EPA Zone 1.

Q: How much does radon mitigation cost in Dayton?

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

Avg: 20.00 pCi/L

Montgomery County

EPA Zone 1

1 user test

Based in Greene County as Ohio's aviation hub, Dayton shows an average radon level of 20.0 pCi/L from available testing data, significantly exceeding the EPA action level of 4.0 pCi/L. The region's glacial till deposits over limestone bedrock create favorable conditions for radon gas migration and accumulation. Homeowners across zip codes 45430-45440 should prioritize testing and mitigation given these elevated readings.

20.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Dayton, OH. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Dayton, OH Radon Mitigation

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

Dayton, OH Radon Testing

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

Dayton, Ohio Radon Levels

User-submitted radon test readings from homes in the Dayton area.

Radon Level	City	Home Age	Foundation	Submitted
20 pCi/L	Dayton, OH	51-99 Years	Partial Basement	May 2019

Have a radon test result for Dayton? Submit your reading to help other homeowners.

Dayton Radon Facts

Key details about the radon risk profile for Dayton and the 45400 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Montgomery County, OH

Zip Code

45400

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

20.00 pCi/L

User Tests Submitted

Dayton and the 45400 zip code are located in Montgomery 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 Dayton, OH

What is the average radon level in Dayton, OH?

Based on 1 user-submitted test, the average radon level in Dayton is 20.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Dayton in?

Dayton and the 45400 zip code are in Montgomery 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 Dayton?

Radon mitigation in Dayton 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 Dayton?

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 Ohio

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

City	Avg User Radon Level	Submissions
Marietta	8.00 pCi/L	5
Cincinnati	5.20 pCi/L	5
Hilliard	11.75 pCi/L	4
Wilmington	5.25 pCi/L	4
Newark	15.00 pCi/L	3
Athens	11.33 pCi/L	3
Findlay	10.33 pCi/L	3
Perrysburg	9.67 pCi/L	3
Powell	8.33 pCi/L	3
Columbus	6.00 pCi/L	3
Chagrin Falls	4.67 pCi/L	3
Hamilton	10.00 pCi/L	2
Chardon	5.50 pCi/L	2
Strongsville	4.50 pCi/L	2
Maineville	10.00 pCi/L	1
Lancaster	9.00 pCi/L	1
West Chester	9.00 pCi/L	1
Amherst	6.00 pCi/L	1
Chillicothe	6.00 pCi/L	1
Lima	5.00 pCi/L	1