Sudbury, MA Radon Levels
Check local Sudbury radon levels and find certified testing and mitigation professionals to keep your home safe
Sudbury, MA Radon Facts
This historic community in Middlesex County within the Boston Metro area sits on New England's granite bedrock, which naturally produces radon gas. Testing data reveals an average radon level of 5.5 pCi/L, exceeding the EPA action level and indicating that many homes require radon mitigation systems. The area's mix of colonial-era homes and modern construction in zip code 01776 provides various pathways for radon entry through basement foundations.
Based on 2 user-submitted radon tests for homes in Sudbury, MA. The EPA recommends taking action at or above 4.0 pCi/L.
Sudbury, MA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
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Sudbury, MA Radon Levels
User-submitted radon test readings from homes in the Sudbury area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 7 pCi/L | Sudbury, MA | 51-99 Years | Full Basement |
| 4 pCi/L | Sudbury, MA | 51-99 Years | Full Basement |
Have a radon test result for Sudbury? Submit your reading to help other homeowners.
Radon Readings Near Sudbury, MA
Compare radon levels in Sudbury with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Wayland | 4.3 mi | 10.67 pCi/L | 3 |
| Stow | 5.5 mi | 7.00 pCi/L | 1 |
| Concord | 5.7 mi | 4.00 pCi/L | 1 |
| Marlborough | 6.3 mi | 13.50 pCi/L | 2 |
| Framingham | 6.4 mi | 6.50 pCi/L | 2 |
| Acton | 6.4 mi | 20.00 pCi/L | 1 |
| Natick | 7.6 mi | 4.50 pCi/L | 2 |
| Wellesley | 9.0 mi | 4.00 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.