Silver Spring, MD Radon Levels

Q: What is the average radon level in Silver Spring, MD?

Based on 3 user-submitted tests, the average radon level is 4.30 pCi/L.

Q: What EPA Radon Zone is Silver Spring in?

Silver Spring is in Montgomery County, EPA Zone 1.

Q: How much does radon mitigation cost in Silver Spring?

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

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

Silver Spring, MD Radon Facts

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

County Montgomery County, MD

Zip Code 20901

Avg. User Level 4.30 pCi/L

User Tests 3

This Montgomery County community within the Washington Metro area shows an average radon level of 4.33 pCi/L, which slightly exceeds the EPA action threshold of 4.0 pCi/L. Located in EPA Zone 1, Silver Spring's underlying geology of crystalline bedrock contributes to elevated radon potential throughout the area's multiple zip codes (20901-20904). Homeowners should prioritize radon testing and consider mitigation systems given these documented readings above the EPA recommended level.

4.30

pCi/L average

Above EPA Action Level

Based on 3 user-submitted radon tests for homes in Silver Spring, MD. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Silver Spring, MD Radon Mitigation

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Silver Spring, MD Radon Levels

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

Radon Level	City	Home Age	Foundation
4 pCi/L	Silver Spring, MD	51-99 Years	—
5 pCi/L	Silver Spring, MD	21-50 Years	Full Basement
4 pCi/L	Silver Spring, MD	51-99 Years	Full Basement

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Radon FAQ for Silver Spring, MD

What is the average radon level in Silver Spring, MD?

Based on 3 user-submitted tests, the average radon level in Silver Spring is 4.30 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 Silver Spring in?

Silver Spring and the 20901 zip code are in Montgomery 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 Silver Spring?

Radon mitigation in Silver Spring 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 Silver Spring?

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

Silver Spring, MD Radon Levels

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

Silver Spring, MD Radon Facts

Silver Spring, MD Radon Mitigation

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Silver Spring, MD Radon Levels

Radon FAQ for Silver Spring, MD

Most Active Radon Markets in Maryland

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