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Tiffin, IA Radon Levels

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


Tiffin, IA Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Johnson County, IA
Zip Code 52340

Located in Johnson County as part of the Iowa City Metro area, Tiffin sits atop glacial deposits over limestone bedrock typical of eastern Iowa's EPA Zone 1 classification. Testing data remains limited for this community in zip code 52340, making individual home testing particularly important for residents to assess their radon exposure.

Tiffin, IA 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 Tiffin, IA

What EPA Radon Zone is Tiffin in?
Tiffin and the 52340 zip code are in Johnson 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 Tiffin?
Radon mitigation in Tiffin 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 Tiffin?
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 Iowa

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

CityAvg User Radon LevelSubmissions
Waterloo 8.50 pCi/L 4
Ames 9.67 pCi/L 3
Fairfield 14.00 pCi/L 2
Mount Pleasant 12.00 pCi/L 2
Ottumwa 5.50 pCi/L 2
Iowa City 7.00 pCi/L 1
Muscatine No submissions 0