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Wellesley Hills, MA Radon Levels

Check local Wellesley Hills radon levels and find certified testing and mitigation professionals to keep your home safe


Wellesley Hills, MA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Norfolk County, MA
Zip Code 02481
Avg. User Level 8.50 pCi/L
User Tests 2

Located within the prestigious Wellesley community in Norfolk County, this Boston Metro area neighborhood has an average radon reading of 6.0 pCi/L, above the EPA's recommended action level. The area features upscale residential properties with full basements, predominantly built during the mid-20th century expansion period. Residents in zip code 02481 should conduct radon testing and consider mitigation systems when readings exceed 4.0 pCi/L.

8.50
pCi/L average
Above EPA Action Level

Based on 2 user-submitted radon tests for homes in Wellesley Hills, MA. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Wellesley Hills, MA Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Wellesley Hills, MA Radon Levels

User-submitted radon test readings from homes in the Wellesley Hills area.

Radon LevelCityHome AgeFoundation
6 pCi/L Wellesley Hills, MA 51-99 Years Partial Basement

Have a radon test result for Wellesley Hills? Submit your reading to help other homeowners.

Radon Readings Near Wellesley Hills, MA

Compare radon levels in Wellesley Hills with the closest nearby cities that have user-submitted test data.

CityDistanceAvg User LevelReadings
Wellesley 1.7 mi 4.00 pCi/L 1
Needham Heights 2.4 mi 4.00 pCi/L 1
Needham 2.5 mi 6.00 pCi/L 1
West Newton 3.6 mi 4.00 pCi/L 1
Newtonville 4.4 mi 3.00 pCi/L 1
Natick 4.5 mi 4.50 pCi/L 2
Newton Center 4.9 mi 4.50 pCi/L 2
Wayland 5.0 mi 10.67 pCi/L 3

Norfolk County Radon Profile

The soils and bedrock of Norfolk County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 17 cities in Norfolk County average 8.08 pCi/L across 25 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Norfolk County to test, as levels can differ between neighboring homes.

Radon FAQ for Wellesley Hills, MA

What is the average radon level in Wellesley Hills, MA?
Based on 2 user-submitted tests, the average radon level in Wellesley Hills is 8.50 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
What EPA Radon Zone is Wellesley Hills in?
Wellesley Hills and the 02481 zip code are in Norfolk County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.
How much does radon mitigation cost in Wellesley Hills?
Radon mitigation in Wellesley Hills typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Wellesley Hills?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.