Sudbury, MA Radon Mitigation and Testing

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

Based on 2 user-submitted tests, the average radon level is 5.50 pCi/L.

Q: What EPA Radon Zone is Sudbury in?

Sudbury is in Middlesex County, EPA Zone 1.

Q: How much does radon mitigation cost in Sudbury?

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

Avg: 5.50 pCi/L

Middlesex County

EPA Zone 1

2 user tests

Sudbury is located in Middlesex County, Massachusetts. With 2 user-submitted readings averaging 5.50 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 01776 zip code.

5.50

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Sudbury, MA Radon Mitigation

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

Sudbury, MA Radon Testing

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

Sudbury, Massachusetts Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
7 pCi/L	Sudbury, MA	51-99 Years	Full Basement	Mar 2018
4 pCi/L	Sudbury, MA	51-99 Years	Full Basement	May 2017

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

Sudbury Radon Facts

Key details about the radon risk profile for Sudbury and the 01776 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Middlesex County, MA

Zip Code

01776

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

5.50 pCi/L

User Tests Submitted

Sudbury and the 01776 zip code are located in Middlesex 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 Sudbury, MA

What is the average radon level in Sudbury, MA?

Based on 2 user-submitted tests, the average radon level in Sudbury is 5.50 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 Sudbury in?

Sudbury and the 01776 zip code are in Middlesex 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 Sudbury?

Radon mitigation in Sudbury 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 Sudbury?

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