Grafton, MA Radon Levels
Check local Grafton radon levels and find certified testing and mitigation professionals to keep your home safe
Grafton, MA Radon Facts
Located in Worcester County within the Worcester Metro area, Grafton has measured an average radon level of 11.0 pCi/L — well above EPA action thresholds. The community sits atop crystalline bedrock of the New England Upland, where granite and metamorphic rocks create significant radon potential throughout central Massachusetts. Colonial-era and Victorian homes common to zip code 01519 often feature stone foundations that can facilitate radon entry from uranium-bearing bedrock.
Based on 1 user-submitted radon test for homes in Grafton, MA. The EPA recommends taking action at or above 4.0 pCi/L.
Grafton, MA Radon Mitigation
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Grafton, MA Radon Levels
User-submitted radon test readings from homes in the Grafton area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 11 pCi/L | Grafton, MA | 21-50 Years | Full Basement |
Have a radon test result for Grafton? Submit your reading to help other homeowners.
Radon Readings Near Grafton, MA
Compare radon levels in Grafton with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| South Grafton | 1.7 mi | 13.00 pCi/L | 1 |
| Millbury | 4.0 mi | 4.00 pCi/L | 1 |
| Upton | 4.6 mi | 7.00 pCi/L | 1 |
| Westborough | 5.9 mi | 6.00 pCi/L | 2 |
| Whitinsville | 6.0 mi | 7.00 pCi/L | 1 |
| Shrewsbury | 6.1 mi | 10.00 pCi/L | 2 |
| Auburn | 7.8 mi | 7.00 pCi/L | 1 |
| Hopkinton | 8.1 mi | 9.33 pCi/L | 3 |
Worcester County Radon Profile
The bedrock and soils beneath Worcester 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 28 cities in Worcester County average 9.12 pCi/L across 41 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 Worcester County.