Indianapolis, IN Radon Mitigation and Testing
Central Indiana's capital city spans multiple counties, with areas in Hamilton County showing an average radon level of 4.0 pCi/L based on recent testing. This reading sits at the EPA action threshold, making radon testing particularly important for residents across the Indianapolis Metro area. The region's glacial till deposits over limestone bedrock, combined with widespread basement construction, create conditions where radon levels can vary significantly between neighborhoods.
Based on 2 user-submitted radon tests for homes in Indianapolis, IN. The EPA recommends taking action at or above 4.0 pCi/L.
Indianapolis, IN Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Indianapolis, IN Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Indianapolis, Indiana Radon Levels
User-submitted radon test readings from homes in the Indianapolis area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 1 pCi/L | Indianapolis, IN | 51-99 Years | No Basement/All Slab | Oct 2025 |
| 7 pCi/L | Indianapolis , IN | 51-99 Years | Full Basement | Sep 2016 |
Have a radon test result for Indianapolis? Submit your reading to help other homeowners.
Indianapolis Radon Facts
Key details about the radon risk profile for Indianapolis and the 46201 zip code area.
Indianapolis and the 46201 zip code are located in Marion County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.
Radon FAQ for Indianapolis, IN
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Most Active Radon Markets in Indiana
Cities with the most user-submitted radon test data in the state.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Bloomington | 8.14 pCi/L | 7 |
| Kokomo | 7.40 pCi/L | 5 |
| Lafayette | 15.00 pCi/L | 3 |
| Valparaiso | 10.00 pCi/L | 3 |
| Avon | 6.00 pCi/L | 3 |
| West Lafayette | 10.50 pCi/L | 2 |
| Dyer | 9.50 pCi/L | 2 |
| Columbus | 7.50 pCi/L | 2 |
| Noblesville | 7.00 pCi/L | 2 |
| Westfield | 7.00 pCi/L | 2 |
| Fishers | 6.50 pCi/L | 2 |
| Corydon | 6.00 pCi/L | 2 |
| Warsaw | 5.50 pCi/L | 2 |
| Indianapolis | 4.00 pCi/L | 2 |
| Newburgh | 8.00 pCi/L | 1 |
| Logansport | 7.00 pCi/L | 1 |
| Terre Haute | 5.00 pCi/L | 1 |
| Muncie | 4.00 pCi/L | 1 |
| Brownsburg | No submissions | 0 |