New London, CT Radon Levels
Check local New London radon levels and find certified testing and mitigation professionals to keep your home safe
New London, CT Radon Facts
EPA Radon Zone
Zone 1 — High Risk
> 4.0 pCi/L (Zone 1)
County
New London County, CT
Zip Code
06320
Situated in New London County along Connecticut's southeastern coast, New London falls within EPA Zone 1, indicating the highest radon potential in the state. The area's granite bedrock and historic housing stock, including many homes with basements built before modern radon-resistant construction practices, create conditions favorable for radon accumulation. With limited testing data available for the 06320 area, local homeowners should prioritize radon testing to assess their individual risk levels.
New London, CT Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
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Radon FAQ for New London, CT
What EPA Radon Zone is New London in?
New London and the 06320 zip code are in New London County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.
How much does radon mitigation cost in New London?
Radon mitigation in New London 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 New London?
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.
Most Active Radon Markets in Connecticut
Cities in Connecticut with the most user-submitted radon test data, ranked by number of submissions.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Hamden | 4.75 pCi/L | 4 |
| West Hartford | 4.25 pCi/L | 4 |
| Greenwich | 7.67 pCi/L | 3 |
| Norwalk | 7.00 pCi/L | 1 |
| Stamford | 5.00 pCi/L | 1 |
| Middletown | 4.00 pCi/L | 1 |
| Guilford | No submissions | 0 |
| Ridgefield | No submissions | 0 |