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Hagerstown, MD Radon Levels

Check local Hagerstown radon levels and find certified testing and mitigation professionals to keep your home safe


Hagerstown, MD Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Washington County, MD
Zip Code 21740
Avg. User Level 8.70 pCi/L
User Tests 6

Positioned in Washington County within Maryland's Cumberland Valley, Hagerstown shows an average radon level of 8.67 pCi/L based on available testing data, which exceeds the EPA action level of 4.0 pCi/L. The area's limestone bedrock and glacial deposits, combined with the region's many homes featuring full basements, contribute to conditions where radon can accumulate to concerning levels requiring mitigation.

8.70
pCi/L average
Above EPA Action Level

Based on 6 user-submitted radon tests for homes in Hagerstown, MD. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Hagerstown, MD Radon Mitigation

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Hagerstown, MD Radon Levels

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

Radon LevelCityHome AgeFoundation
4 pCi/L Hagerstown, MD 51-99 Years
8 pCi/L Hagerstown, MD 51-99 Years Full Basement
12 pCi/L Hagerstown, MD 51-99 Years Partial Basement
20 pCi/L Hagerstown, MD 21-50 Years Full Basement
4 pCi/L Hagerstown, MD 21-50 Years Partial Basement

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

Radon FAQ for Hagerstown, MD

What is the average radon level in Hagerstown, MD?
Based on 6 user-submitted tests, the average radon level in Hagerstown is 8.70 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 Hagerstown in?
Hagerstown and the 21740 zip code are in Washington 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 Hagerstown?
Radon mitigation in Hagerstown 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 Hagerstown?
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.

CityAvg User Radon LevelSubmissions
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