Glenwood, MD Radon Levels
Check local Glenwood radon levels and find certified testing and mitigation professionals to keep your home safe
Glenwood, MD Radon Facts
EPA Radon Zone
Zone 1 — High Risk
> 4.0 pCi/L (Zone 1)
County
Howard County, MD
Zip Code
21738
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.
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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 in Maryland with the most user-submitted radon test data, ranked by number of submissions.
| 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 |
| Frostburg | 8.67 pCi/L | 3 |