Holliston, MA Radon Levels
Check local Holliston radon levels and find certified testing and mitigation professionals to keep your home safe
Holliston, MA Radon Facts
Nestled in Middlesex County, Holliston sits on New England's granite bedrock overlaid with glacial till from the last ice age. The community's housing stock features predominantly colonial and ranch-style homes from the mid-20th century, many with full basements. Testing data shows an average radon level of 4.0 pCi/L, which meets the EPA action threshold, making professional testing essential for all homeowners in zip code 01736.
Based on 1 user-submitted radon test for homes in Holliston, MA. The EPA recommends taking action at or above 4.0 pCi/L.
Holliston, MA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Holliston?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Middlesex County Pros
Holliston, MA Radon Levels
User-submitted radon test readings from homes in the Holliston area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 4 pCi/L | Holliston, MA | 21-50 Years | Full Basement |
Have a radon test result for Holliston? Submit your reading to help other homeowners.
Radon Readings Near Holliston, MA
Compare radon levels in Holliston with the closest nearby cities that have user-submitted test data.
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.