Worcester, MA Radon Levels
Check local Worcester radon levels and find certified testing and mitigation professionals to keep your home safe
Worcester, MA Radon Facts
As central Massachusetts's largest city, Worcester in Worcester County shows concerning radon levels with an average of 17.67 pCi/L — more than four times the EPA action level. This Worcester Metro area community across multiple zip codes sits in EPA Zone 1, where granite bedrock and glacial deposits create ideal conditions for radon accumulation. Immediate professional testing and mitigation are strongly recommended for all area homes, particularly those with basements common in New England construction.
Based on 3 user-submitted radon tests for homes in Worcester, MA. The EPA recommends taking action at or above 4.0 pCi/L.
Worcester, MA Radon Mitigation
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Worcester, MA Radon Levels
User-submitted radon test readings from homes in the Worcester area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 20 pCi/L | Worcester, MA | 21-50 Years | Full Basement |
| 15 pCi/L | Worcester, MA | 51-99 Years | Full Basement |
| 18 pCi/L | Worcester, MA | 21-50 Years | Full Basement |
Have a radon test result for Worcester? Submit your reading to help other homeowners.
Radon Readings Near Worcester, MA
Compare radon levels in Worcester with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Shrewsbury | 5.0 mi | 10.00 pCi/L | 2 |
| Auburn | 5.0 mi | 7.00 pCi/L | 1 |
| Leicester | 5.9 mi | 9.00 pCi/L | 1 |
| Millbury | 6.1 mi | 4.00 pCi/L | 1 |
| Grafton | 8.5 mi | 11.00 pCi/L | 1 |
| Northborough | 9.2 mi | 6.00 pCi/L | 2 |
| South Grafton | 9.4 mi | 13.00 pCi/L | 1 |
| Rutland | 9.7 mi | 4.50 pCi/L | 2 |
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.