Saint Leonard, MD Radon Levels

Q: What is the average radon level in Saint Leonard, MD?

Based on 1 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is Saint Leonard in?

Saint Leonard is in Calvert County, EPA Zone 1.

Q: How much does radon mitigation cost in Saint Leonard?

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

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

Saint Leonard, MD Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Calvert County, MD

Zip Code 20685

Avg. User Level 5.00 pCi/L

User Tests 1

Situated in Calvert County along the Chesapeake Bay's western shore, Saint Leonard shows an average radon level of 5.0 pCi/L that exceeds the EPA action threshold. The area's Miocene-era cliffs and sandy coastal plain geology, combined with many homes featuring basements or crawl spaces, create conditions conducive to radon accumulation. Residents in zip code 20685 should strongly consider radon mitigation given these elevated readings.

5.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Saint Leonard, MD Radon Mitigation

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Saint Leonard, MD Radon Levels

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

Radon Level	City	Home Age	Foundation
5 pCi/L	Saint Leonard, MD	0-20 Years	—

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Radon FAQ for Saint Leonard, MD

What is the average radon level in Saint Leonard, MD?

Based on 1 user-submitted test, the average radon level in Saint Leonard is 5.00 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 Saint Leonard in?

Saint Leonard and the 20685 zip code are in Calvert 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 Saint Leonard?

Radon mitigation in Saint Leonard 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 Saint Leonard?

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

Saint Leonard, MD Radon Levels

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

Saint Leonard, MD Radon Facts

Saint Leonard, MD Radon Mitigation

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Saint Leonard, MD Radon Levels

Radon FAQ for Saint Leonard, MD

Most Active Radon Markets in Maryland

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