Halethorpe, MD Radon Mitigation and Testing

Q: What EPA Radon Zone is Halethorpe in?

Halethorpe is in Baltimore County, EPA Zone 1.

Q: How much does radon mitigation cost in Halethorpe?

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

Baltimore County

EPA Zone 1

Situated in Baltimore County within Maryland's central region, Halethorpe lies in an area of coastal plain sediments over older crystalline bedrock that can produce variable radon levels. Testing data for zip code 21227 remains limited, making individual home testing advisable for residents, especially those in properties with basements or crawl spaces where radon accumulation could occur.

Halethorpe, MD Radon Mitigation

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

Halethorpe, MD Radon Testing

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

Halethorpe Radon Facts

Key details about the radon risk profile for Halethorpe and the 21227 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Baltimore County, MD

Zip Code

21227

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Halethorpe and the 21227 zip code are located in Baltimore 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 Halethorpe, MD

What EPA Radon Zone is Halethorpe in?

Halethorpe and the 21227 zip code are in Baltimore 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 Halethorpe?

Radon mitigation in Halethorpe 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 Halethorpe?

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