Glenwood, MD Radon Mitigation and Testing

Q: What EPA Radon Zone is Glenwood in?

Glenwood is in Howard County, EPA Zone 1.

Q: How much does radon mitigation cost in Glenwood?

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

Howard County

EPA Zone 1

Nestled within Howard County in the Baltimore Metro area, Glenwood features residential developments built on Piedmont geology with granite and schist bedrock that can produce elevated radon levels. The community's housing stock includes both established neighborhoods and newer subdivisions, typically with basement foundations common to the mid-Atlantic region. Given the limited testing data available for zip code 21738, homeowners are encouraged to test their properties to determine radon levels.

Glenwood, MD Radon Mitigation

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

Glenwood, MD Radon Testing

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

Glenwood Radon Facts

Key details about the radon risk profile for Glenwood and the 21738 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Howard County, MD

Zip Code

21738

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Glenwood and the 21738 zip code are located in Howard 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 Glenwood, MD

What EPA Radon Zone is Glenwood in?

Glenwood and the 21738 zip code are in Howard 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 Glenwood?

Radon mitigation in Glenwood 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 Glenwood?

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