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South Dartmouth, MA Radon Levels

Check local South Dartmouth radon levels and find certified testing and mitigation professionals to keep your home safe


South Dartmouth, MA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Bristol County, MA
Zip Code 02748
Avg. User Level 20.00 pCi/L
User Tests 1

This coastal community in Bristol County, part of the Providence Metro area, shows dramatically elevated radon levels averaging 20.0 pCi/L. This reading is five times the EPA action level, indicating serious radon concerns that require immediate mitigation attention. Despite its location in EPA Zone 2, zip code 02748 demonstrates that coastal areas can still experience dangerous radon concentrations.

20.00
pCi/L average
Above EPA Action Level

Based on 1 user-submitted radon test for homes in South Dartmouth, MA. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

South Dartmouth, MA Radon Mitigation

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

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South Dartmouth, MA Radon Levels

User-submitted radon test readings from homes in the South Dartmouth area.

Radon LevelCityHome AgeFoundation
20 pCi/L South Dartmouth, MA 21-50 Years Full Basement

Have a radon test result for South Dartmouth? Submit your reading to help other homeowners.

Radon Readings Near South Dartmouth, MA

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

CityDistanceAvg User LevelReadings
North Dartmouth 4.7 mi 10.00 pCi/L 1
Westport 5.1 mi 4.00 pCi/L 1
New Bedford 6.4 mi 6.00 pCi/L 2
Acushnet 10.0 mi 11.00 pCi/L 1
Fall River 12.4 mi 4.50 pCi/L 2
Somerset 15.1 mi 4.00 pCi/L 1
Falmouth 18.7 mi 7.00 pCi/L 1
North Falmouth 19.4 mi 6.00 pCi/L 1

Bristol County Radon Profile

EPA mapping assigns Bristol 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 11 cities in Bristol County average 7.53 pCi/L across 15 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 Bristol County home regardless of zone or a neighbor's results.

Radon FAQ for South Dartmouth, MA

What is the average radon level in South Dartmouth, MA?
Based on 1 user-submitted test, the average radon level in South Dartmouth is 20.00 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 South Dartmouth in?
South Dartmouth and the 02748 zip code are in Bristol 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 South Dartmouth?
Radon mitigation in South Dartmouth 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 South Dartmouth?
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.