Falmouth, MA Radon Levels
Check local Falmouth radon levels and find certified testing and mitigation professionals to keep your home safe
Falmouth, MA Radon Facts
Perched along Cape Cod's sandy shores in Barnstable County, Falmouth recorded an average radon level of 7.0 pCi/L from initial testing—well above the EPA's 4.0 pCi/L action threshold. The area's glacial deposits and proximity to granite bedrock contribute to elevated radon potential throughout the Cape Cod Metro region. Given this concerning preliminary reading in ZIP 02540, homeowners should prioritize radon testing, particularly in finished basements and lower-level living spaces common in coastal Massachusetts homes.
Based on 1 user-submitted radon test for homes in Falmouth, MA. The EPA recommends taking action at or above 4.0 pCi/L.
Falmouth, MA Radon Mitigation
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Falmouth, MA Radon Levels
User-submitted radon test readings from homes in the Falmouth area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 7 pCi/L | Falmouth, MA | 21-50 Years | Full Basement |
Have a radon test result for Falmouth? Submit your reading to help other homeowners.
Radon Readings Near Falmouth, MA
Compare radon levels in Falmouth with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| North Falmouth | 5.3 mi | 6.00 pCi/L | 1 |
| Mashpee | 7.9 mi | 5.00 pCi/L | 4 |
| Buzzards Bay | 9.6 mi | 9.50 pCi/L | 2 |
| Sandwich | 12.6 mi | 10.00 pCi/L | 1 |
| Osterville | 13.1 mi | 6.00 pCi/L | 1 |
| New Bedford | 17.0 mi | 6.00 pCi/L | 2 |
| Acushnet | 17.5 mi | 11.00 pCi/L | 1 |
| South Dartmouth | 18.7 mi | 20.00 pCi/L | 1 |
Barnstable County Radon Profile
EPA mapping assigns Barnstable County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 6 cities in Barnstable County average 6.80 pCi/L across 10 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Barnstable County home regardless of zone or a neighbor's results.