Marietta, OH Radon Mitigation and Testing
Nestled in Washington County along the Ohio River valley, Marietta shows an average radon level of 8.0 pCi/L based on local testing—well above the EPA's 4.0 pCi/L action threshold. The area's geology, featuring alluvial deposits over shale and sandstone bedrock, combined with historic homes often built with stone foundations, contributes to elevated readings. Homeowners in this scenic river community should prioritize radon mitigation given these documented elevated levels.
Based on 5 user-submitted radon tests for homes in Marietta, OH. The EPA recommends taking action at or above 4.0 pCi/L.
Marietta, OH Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Marietta, OH Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Marietta, Ohio Radon Levels
User-submitted radon test readings from homes in the Marietta area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 5 pCi/L | Marietta, OH | 100+ Years | Full Basement | Jun 2024 |
| 8 pCi/L | Marietta, OH | 21-50 Years | Full Basement | Jan 2022 |
| 9 pCi/L | Marietta, OH | 21-50 Years | Full Basement | Nov 2019 |
Have a radon test result for Marietta? Submit your reading to help other homeowners.
Marietta Radon Facts
Key details about the radon risk profile for Marietta and the 45750 zip code area.
Marietta and the 45750 zip code are located in Washington County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.
Radon FAQ for Marietta, OH
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Most Active Radon Markets in Ohio
Cities with the most user-submitted radon test data in the state.
| 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 |
| Chagrin Falls | 4.67 pCi/L | 3 |
| Hamilton | 10.00 pCi/L | 2 |
| Chardon | 5.50 pCi/L | 2 |
| Strongsville | 4.50 pCi/L | 2 |
| Maineville | 10.00 pCi/L | 1 |
| Lancaster | 9.00 pCi/L | 1 |
| West Chester | 9.00 pCi/L | 1 |
| Amherst | 6.00 pCi/L | 1 |
| Chillicothe | 6.00 pCi/L | 1 |
| Lima | 5.00 pCi/L | 1 |