Mason, OH Radon Levels

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

Based on 2 user-submitted tests, the average radon level is 6.50 pCi/L.

Q: What EPA Radon Zone is Mason in?

Mason is in Warren County, EPA Zone 1.

Q: How much does radon mitigation cost in Mason?

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

Check local Mason radon levels and find certified testing and mitigation professionals to keep your home safe

Mason, OH Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Warren County, OH

Zip Code 45040

Avg. User Level 6.50 pCi/L

User Tests 2

Suburban Warren County lies within the Cincinnati metropolitan area, where glacial deposits over limestone bedrock create moderate-to-high radon potential across southwestern Ohio. Testing data for Mason reveals an average indoor radon level of 6.5 pCi/L, significantly exceeding the EPA's recommended action threshold of 4.0 pCi/L. With zip code 45040's mix of newer subdivision homes and established properties featuring full basements, professional radon testing and mitigation should be standard practice for all residents.

6.50

pCi/L average

Above EPA Action Level

Based on 2 user-submitted radon tests for homes in Mason, OH. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Mason, OH Radon Mitigation

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Mason, OH Radon Levels

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

Radon Level	City	Home Age	Foundation
5 pCi/L	Mason, OH	21-50 Years	Full Basement
8 pCi/L	Mason, OH	0-20 Years	Full Basement

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

Radon FAQ for Mason, OH

What is the average radon level in Mason, OH?

Based on 2 user-submitted tests, the average radon level in Mason is 6.50 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 Mason in?

Mason and the 45040 zip code are in Warren 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 Mason?

Radon mitigation in Mason 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 Mason?

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 in Ohio with the most user-submitted radon test data, ranked by number of submissions.

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

Mason, OH Radon Levels

Check local Mason radon levels and find certified testing and mitigation professionals to keep your home safe

Mason, OH Radon Facts

Mason, OH Radon Mitigation

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Mason, OH Radon Levels

Radon FAQ for Mason, OH

Most Active Radon Markets in Ohio

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