Union City, OH Radon Levels
Check local Union City radon levels and find certified testing and mitigation professionals to keep your home safe
Union City, OH Radon Facts
EPA Radon Zone
Zone 1 — High Risk
> 4.0 pCi/L (Zone 1)
County
Darke County, OH
Zip Code
45390
Testing in Union City, Darke County, has revealed an average radon level of 8.0 pCi/L, double the EPA's 4.0 pCi/L action threshold. This community near the Dayton Metro area sits where Ohio's glacial geology and limestone bedrock create conditions that facilitate radon accumulation in homes. Immediate professional mitigation is strongly recommended for residents in zip codes 45354 and 45390.
Union City, OH Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Union City?
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Radon FAQ for Union City, OH
What EPA Radon Zone is Union City in?
Union City and the 45390 zip code are in Darke 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 Union City?
Radon mitigation in Union City 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 Union City?
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 |