Frederick, MD Radon Mitigation and Testing
Homeowners in Frederick County face significant radon concerns, with local testing showing an average level of 8.29 pCi/L that notably exceeds the EPA action threshold. The underlying limestone and metamorphic bedrock of the Maryland Piedmont region creates geological conditions that promote radon gas migration into homes. With Frederick's mix of established neighborhoods and newer developments in zip codes 21701-21704, residents across all housing types should prioritize radon testing and mitigation.
Based on 7 user-submitted radon tests for homes in Frederick, MD. The EPA recommends taking action at or above 4.0 pCi/L.
Frederick, MD Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Frederick, MD Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Frederick, Maryland Radon Levels
User-submitted radon test readings from homes in the Frederick area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 6 pCi/L | Frederick, MD | 0-20 Years | Full Basement | Mar 2025 |
| 5 pCi/L | Frederick, MD | 51-99 Years | Full Basement | Dec 2024 |
| 9 pCi/L | Frederick, MD | 0-20 Years | No Basement/All Slab | Sep 2023 |
| 12 pCi/L | Frederick, MD | 0-20 Years | Full Basement | Apr 2023 |
| 10 pCi/L | Frederick, MD | 0-20 Years | — | Nov 2022 |
Have a radon test result for Frederick? Submit your reading to help other homeowners.
Frederick Radon Facts
Key details about the radon risk profile for Frederick and the 21701 zip code area.
Frederick and the 21701 zip code are located in Frederick 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 Frederick, MD
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Most Active Radon Markets in Maryland
Cities with the most user-submitted radon test data in the state.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Frederick | 8.29 pCi/L | 7 |
| Potomac | 9.00 pCi/L | 6 |
| Hagerstown | 8.67 pCi/L | 6 |
| Westminster | 14.50 pCi/L | 4 |
| Baltimore | 7.00 pCi/L | 4 |
| Annapolis | 4.25 pCi/L | 4 |
| Upper Marlboro | 15.00 pCi/L | 3 |
| Edgewater | 12.67 pCi/L | 3 |
| Bowie | 9.00 pCi/L | 3 |
| Clarksburg | 8.00 pCi/L | 3 |
| Gambrills | 6.00 pCi/L | 3 |
| Elkton | 5.33 pCi/L | 3 |
| Silver Spring | 4.33 pCi/L | 3 |
| Chesapeake Beach | 14.00 pCi/L | 2 |
| Cumberland | 9.00 pCi/L | 2 |
| Frostburg | 9.00 pCi/L | 2 |
| Owings | 5.50 pCi/L | 2 |
| Huntingtown | 4.50 pCi/L | 2 |
| Mc Henry | 20.00 pCi/L | 1 |
| Mount Airy | 20.00 pCi/L | 1 |