Sunderland, MD Radon Mitigation and Testing

Q: What is the average radon level in Sunderland, MD?

Based on 1 user-submitted tests, the average radon level is 6.00 pCi/L.

Q: What EPA Radon Zone is Sunderland in?

Sunderland is in Calvert County, EPA Zone 1.

Q: How much does radon mitigation cost in Sunderland?

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

Avg: 6.00 pCi/L

Calvert County

EPA Zone 1

1 user test

This Chesapeake Bay area community in Calvert County recorded an average radon level of 6.0 pCi/L in testing from zip code 20689, exceeding the EPA action threshold. Located within the Lexington Park Metro area, Sunderland sits on Maryland's Western Shore where coastal plain sediments over bedrock can create surprising radon accumulation. The area's mix of waterfront properties and suburban developments warrants careful radon monitoring.

6.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Sunderland, MD Radon Mitigation

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

Sunderland, MD Radon Testing

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

Sunderland, Maryland Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
6 pCi/L	Sunderland, MD	21-50 Years	Partial Basement	Aug 2023

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

Sunderland Radon Facts

Key details about the radon risk profile for Sunderland and the 20689 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Calvert County, MD

Zip Code

20689

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

6.00 pCi/L

User Tests Submitted

Sunderland and the 20689 zip code are located in Calvert 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 Sunderland, MD

What is the average radon level in Sunderland, MD?

Based on 1 user-submitted test, the average radon level in Sunderland is 6.00 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 Sunderland in?

Sunderland and the 20689 zip code are in Calvert 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 Sunderland?

Radon mitigation in Sunderland 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 Sunderland?

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 Maryland

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

City	Avg User Radon Level	Submissions
Frederick	8.29 pCi/L	7
Potomac	9.00 pCi/L	6
Hagerstown	8.67 pCi/L	6
Westminster	14.50 pCi/L	4
Baltimore	7.00 pCi/L	4
Annapolis	4.25 pCi/L	4
Upper Marlboro	15.00 pCi/L	3
Edgewater	12.67 pCi/L	3
Bowie	9.00 pCi/L	3
Clarksburg	8.00 pCi/L	3
Gambrills	6.00 pCi/L	3
Elkton	5.33 pCi/L	3
Silver Spring	4.33 pCi/L	3
Chesapeake Beach	14.00 pCi/L	2
Cumberland	9.00 pCi/L	2
Frostburg	9.00 pCi/L	2
Owings	5.50 pCi/L	2
Huntingtown	4.50 pCi/L	2
Mc Henry	20.00 pCi/L	1
Mount Airy	20.00 pCi/L	1