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Towson, MD Radon Levels

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


Towson, MD Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Baltimore County, MD
Zip Code 21204
Avg. User Level 6.00 pCi/L
User Tests 1

Towson, the county seat of Baltimore County, shows an average radon level of 6.0 pCi/L based on available testing data, which exceeds the EPA action threshold of 4.0 pCi/L. This Baltimore Metro suburb sits atop the Piedmont geological province, where granite and gneiss bedrock can produce elevated radon levels in homes with basements. Homeowners in zip codes 21204 and 21286 should prioritize radon testing and mitigation given these elevated readings.

6.00
pCi/L average
Above EPA Action Level

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

0
4.0 EPA
10+

Towson, MD Radon Mitigation

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

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Towson, MD Radon Levels

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

Radon LevelCityHome AgeFoundation
6 pCi/L Towson, MD 51-99 Years Full Basement

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

Radon FAQ for Towson, MD

What is the average radon level in Towson, MD?
Based on 1 user-submitted test, the average radon level in Towson 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 Towson in?
Towson and the 21204 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 Towson?
Radon mitigation in Towson 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 Towson?
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
Clarksburg 8.00 pCi/L 3