Westport, MA Radon Mitigation and Testing

Q: What is the average radon level in Westport, MA?

Based on 1 user-submitted tests, the average radon level is 4.00 pCi/L.

Q: What EPA Radon Zone is Westport in?

Westport is in Bristol County, EPA Zone 2.

Q: How much does radon mitigation cost in Westport?

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

Avg: 4.00 pCi/L

Bristol County

EPA Zone 2

1 user test

This coastal Bristol County community within the Providence metro area has recorded an average radon level of 4.0 pCi/L based on initial testing data. Westport's housing includes both historic New England homes and modern construction, many with basement foundations that can accumulate radon gas from underlying glacial deposits. While this reading meets the EPA action threshold exactly, homeowners should continue testing to monitor levels and consider mitigation if needed, particularly in zip code 02791's varied geological conditions.

4.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Westport, MA Radon Mitigation

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

Westport, MA Radon Testing

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

Westport, Massachusetts Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
4 pCi/L	Westport, MA	100+ Years	Full Basement	Dec 2024

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

Westport Radon Facts

Key details about the radon risk profile for Westport and the 02790 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Bristol County, MA

Zip Code

02790

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

4.00 pCi/L

User Tests Submitted

Westport and the 02790 zip code are located in Bristol County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Westport, MA

What is the average radon level in Westport, MA?

Based on 1 user-submitted test, the average radon level in Westport is 4.00 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 Westport in?

Westport and the 02790 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 Westport?

Radon mitigation in Westport 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 Westport?

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 Massachusetts

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

City	Avg User Radon Level	Submissions
Littleton	9.40 pCi/L	5
Gloucester	8.40 pCi/L	5
Florence	7.40 pCi/L	5
Douglas	12.00 pCi/L	4
Weymouth	8.50 pCi/L	4
Mashpee	5.00 pCi/L	4
Natick	5.00 pCi/L	4
Worcester	17.67 pCi/L	3
Attleboro	10.00 pCi/L	3
Stoneham	9.67 pCi/L	3
Hopkinton	9.33 pCi/L	3
Medford	8.00 pCi/L	3
Boxford	6.67 pCi/L	3
Reading	5.67 pCi/L	3
Haverhill	5.00 pCi/L	3
Melrose	5.00 pCi/L	3
Somerville	4.33 pCi/L	3
Woburn	19.00 pCi/L	2
Marlborough	13.50 pCi/L	2
Cohasset	11.50 pCi/L	2