Arlington, MA Radon Levels
Check local Arlington radon levels and find certified testing and mitigation professionals to keep your home safe
Arlington, MA Radon Facts
Part of the Boston Metro in Middlesex County, Arlington shows an average radon level of 4.0 pCi/L across zip codes 02474 and 02476, which meets the EPA action threshold precisely. The community's dense mix of older homes with full basements sits atop glacial deposits that can trap radon gas effectively. While current readings are at the EPA threshold, continued testing and potential mitigation consideration remain important for resident safety.
Based on 2 user-submitted radon tests for homes in Arlington, MA. The EPA recommends taking action at or above 4.0 pCi/L.
Arlington, MA Radon Mitigation
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Arlington, MA Radon Levels
User-submitted radon test readings from homes in the Arlington area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 5 pCi/L | Arlington, MA | 51-99 Years | Full Basement |
| 3 pCi/L | Arlington, MA | 51-99 Years | Full Basement |
Have a radon test result for Arlington? Submit your reading to help other homeowners.
Radon Readings Near Arlington, MA
Compare radon levels in Arlington with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Winchester | 2.6 mi | 4.00 pCi/L | 2 |
| Medford | 2.9 mi | 8.00 pCi/L | 3 |
| Lexington | 3.6 mi | 4.33 pCi/L | 3 |
| Somerville | 3.6 mi | 4.50 pCi/L | 4 |
| Waltham | 4.0 mi | 4.00 pCi/L | 1 |
| Woburn | 4.5 mi | 16.33 pCi/L | 3 |
| Newtonville | 5.1 mi | 3.00 pCi/L | 1 |
| Malden | 5.4 mi | 5.00 pCi/L | 2 |
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.