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Ashland, OH Radon Levels

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


Ashland, OH Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Ashland County, OH
Zip Code 44805

The county seat of Ashland County in north-central Ohio, this community sits on glacial till deposits over Paleozoic shale and sandstone formations. Testing reveals a dramatically elevated average radon level of 20.0 pCi/L, five times the EPA action level and among the highest readings in Ohio. Residents in the 44805 zip code should prioritize immediate radon mitigation, as these levels pose significant long-term health risks without proper ventilation systems.

Ashland, OH Radon Mitigation

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

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Ashland, OH Radon Levels

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

Radon LevelCityHome AgeFoundation
20 pCi/L Ashland, OH 51-99 Years Full Basement

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

Radon FAQ for Ashland, OH

What EPA Radon Zone is Ashland in?
Ashland and the 44805 zip code are in Ashland 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 Ashland?
Radon mitigation in Ashland 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 Ashland?
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.

CityAvg User Radon LevelSubmissions
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