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Ada, OH Radon Levels

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


Ada, OH Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Hardin County, OH
Zip Code 45810

Situated in rural Hardin County, Ada serves as home to Ohio Northern University and features a mix of historic homes and student housing scattered throughout the community. The area's flat agricultural landscape sits on glacial till over limestone bedrock, geological conditions that can facilitate radon gas migration into buildings. Since specific testing data is unavailable for zip code 45810, both residents and property managers should prioritize radon assessment.

Ada, OH Radon Mitigation

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

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Radon FAQ for Ada, OH

What EPA Radon Zone is Ada in?
Ada and the 45810 zip code are in Hardin 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 Ada?
Radon mitigation in Ada 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 Ada?
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