Baltimore, MD Radon Levels

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

Based on 4 user-submitted tests, the average radon level is 7.00 pCi/L.

Q: What EPA Radon Zone is Baltimore in?

Baltimore is in Baltimore City County, EPA Zone Unknown.

Q: How much does radon mitigation cost in Baltimore?

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

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

Baltimore, MD Radon Facts

EPA Radon Zone Unknown Unknown

County Baltimore City County, MD

Zip Code 21201

Avg. User Level 7.00 pCi/L

User Tests 4

Maryland's largest city, Baltimore spans multiple zip codes across Baltimore City and extends into surrounding counties like Anne Arundel. Current testing shows an average radon level of 7.0 pCi/L, which exceeds the EPA action level and indicates immediate mitigation consideration for affected homes. The city's diverse housing stock, from historic rowhouses to modern high-rises, creates varied radon entry patterns that require property-specific assessment across all neighborhoods.

7.00

pCi/L average

Above EPA Action Level

Based on 4 user-submitted radon tests for homes in Baltimore, MD. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Baltimore, MD Radon Mitigation

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Baltimore, MD Radon Levels

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

Radon Level	City	Home Age	Foundation
5 pCi/L	Baltimore, MD	51-99 Years	Full Basement
17 pCi/L	Baltimore, MD	51-99 Years	Full Basement
3 pCi/L	Baltimore, MD	0-20 Years	Full Basement
3 pCi/L	Baltimore, MD	100+ Years	Full Basement

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

Radon FAQ for Baltimore, MD

What is the average radon level in Baltimore, MD?

Based on 4 user-submitted tests, the average radon level in Baltimore is 7.00 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 Baltimore in?

Baltimore and the 21201 zip code are in Baltimore City County, which has an EPA assigned Radon Zone of Unknown. A zone of Unknown does not have sufficient data for classification.

How much does radon mitigation cost in Baltimore?

Radon mitigation in Baltimore 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 Baltimore?

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

Baltimore, MD Radon Levels

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

Baltimore, MD Radon Facts

Baltimore, MD Radon Mitigation

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Baltimore, MD Radon Levels

Radon FAQ for Baltimore, MD

Most Active Radon Markets in Maryland

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