Somerville, MA Radon Levels
Check local Somerville radon levels and find certified testing and mitigation professionals to keep your home safe
Somerville, MA Radon Facts
This dense urban community in Middlesex County shows an average radon level of 4.33 pCi/L, slightly exceeding the EPA action threshold of 4.0 pCi/L. Despite Somerville's urban setting just outside Boston, the underlying glacial deposits and older housing stock with basements can trap radon gas effectively. With readings ranging from 2.0 to 6.0 pCi/L across tested properties, individual testing remains crucial for all residents.
Based on 4 user-submitted radon tests for homes in Somerville, MA. The EPA recommends taking action at or above 4.0 pCi/L.
Somerville, MA Radon Mitigation
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Somerville, MA Radon Levels
User-submitted radon test readings from homes in the Somerville area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 2 pCi/L | Somerville, MA | 51-99 Years | Full Basement |
| 5 pCi/L | Somerville, MA | 100+ Years | Full Basement |
| 6 pCi/L | Somerville, MA | 100+ Years | Full Basement |
Have a radon test result for Somerville? Submit your reading to help other homeowners.
Radon Readings Near Somerville, MA
Compare radon levels in Somerville with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Medford | 1.8 mi | 8.00 pCi/L | 3 |
| Everett | 3.1 mi | 4.50 pCi/L | 2 |
| Malden | 3.5 mi | 5.00 pCi/L | 2 |
| Arlington | 3.6 mi | 4.00 pCi/L | 2 |
| Winchester | 4.7 mi | 4.00 pCi/L | 2 |
| Melrose | 5.1 mi | 5.00 pCi/L | 3 |
| Newton Center | 5.6 mi | 4.50 pCi/L | 2 |
| Newtonville | 5.9 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.