Lexington, MA Radon Levels
Check local Lexington radon levels and find certified testing and mitigation professionals to keep your home safe
Lexington, MA Radon Facts
Situated in Middlesex County within the Boston Metro area, Lexington's granite bedrock and glacial till deposits contribute to moderate radon potential. Testing data reveals an average level of 4.5 pCi/L, which slightly exceeds the EPA action threshold of 4.0 pCi/L. The area's mix of historic colonial homes and newer construction with full basements makes regular radon testing particularly important for homeowners.
Based on 3 user-submitted radon tests for homes in Lexington, MA. The EPA recommends taking action at or above 4.0 pCi/L.
Lexington, MA 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 Lexington?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Middlesex County Pros
Lexington, MA Radon Levels
User-submitted radon test readings from homes in the Lexington area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 4 pCi/L | Lexington, MA | 51-99 Years | Partial Basement |
| 5 pCi/L | Lexington, MA | 21-50 Years | Full Basement |
Have a radon test result for Lexington? Submit your reading to help other homeowners.
Radon Readings Near Lexington, MA
Compare radon levels in Lexington with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Arlington | 3.6 mi | 4.00 pCi/L | 2 |
| Winchester | 4.0 mi | 4.00 pCi/L | 2 |
| Woburn | 4.0 mi | 16.33 pCi/L | 3 |
| Burlington | 4.2 mi | 5.50 pCi/L | 2 |
| Waltham | 4.4 mi | 4.00 pCi/L | 1 |
| Medford | 6.2 mi | 8.00 pCi/L | 3 |
| Stoneham | 6.7 mi | 9.67 pCi/L | 3 |
| Newtonville | 6.8 mi | 3.00 pCi/L | 1 |
Middlesex County Radon Profile
The bedrock and soils beneath Middlesex County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 46 cities in Middlesex County average 7.28 pCi/L across 90 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Middlesex County.