North Stonington, CT Radon Mitigation and Testing

Q: What is the average radon level in North Stonington, CT?

Based on 1 user-submitted tests, the average radon level is 13.00 pCi/L.

Q: What EPA Radon Zone is North Stonington in?

North Stonington is in New London County, EPA Zone 1.

Q: How much does radon mitigation cost in North Stonington?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Avg: 13.00 pCi/L

New London County

EPA Zone 1

1 user test

This rural community in eastern New London County recorded a concerning average radon level of 13.0 pCi/L in zip code 06359, significantly exceeding EPA action guidelines. Built on Connecticut's granite and gneiss bedrock with glacial deposits, North Stonington's geological foundation creates favorable conditions for radon accumulation in basements and lower levels. Given this elevated reading, all homeowners should prioritize immediate radon testing and consider mitigation if levels exceed 4.0 pCi/L.

13.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

North Stonington, CT Radon Mitigation

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

North Stonington, CT Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

North Stonington, Connecticut Radon Levels

User-submitted radon test readings from homes in the North Stonington area.

Radon Level	City	Home Age	Foundation	Submitted
13 pCi/L	North Stonington, CT	0-20 Years	Full Basement	Dec 2020

Have a radon test result for North Stonington? Submit your reading to help other homeowners.

North Stonington Radon Facts

Key details about the radon risk profile for North Stonington and the 06359 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

New London County, CT

Zip Code

06359

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

13.00 pCi/L

User Tests Submitted

North Stonington and the 06359 zip code are located in New London County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for North Stonington, CT

What is the average radon level in North Stonington, CT?

Based on 1 user-submitted test, the average radon level in North Stonington is 13.00 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 North Stonington in?

North Stonington and the 06359 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 North Stonington?

Radon mitigation in North Stonington 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 North Stonington?

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 with the most user-submitted radon test data in the state.

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