Baltimore, MD Radon Mitigation and Testing

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.

Avg: 7.00 pCi/L

Baltimore City County

EPA Zone Unknown

4 user tests

Baltimore is located in Baltimore City County, Maryland. With 4 user-submitted readings averaging 7.00 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 21201 zip code.

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

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

Baltimore, MD Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Baltimore, Maryland Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Baltimore, MD	51-99 Years	Full Basement	Apr 2022
17 pCi/L	Baltimore, MD	51-99 Years	Full Basement	Mar 2021
3 pCi/L	Baltimore, MD	0-20 Years	Full Basement	Jul 2020
3 pCi/L	Baltimore, MD	100+ Years	Full Basement	Mar 2020

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

Baltimore Radon Facts

Key details about the radon risk profile for Baltimore and the 21201 zip code area.

EPA Radon Zone

Unknown

County

Baltimore City County, MD

Zip Code

21201

Predicted Screening Level

Unknown

Avg. User Submitted Level

7.00 pCi/L

User Tests Submitted

Baltimore and the 21201 zip code are located in Baltimore City County, which has an EPA assigned Radon Zone of Unknown. A radon zone of Unknown does not have sufficient data for classification. The EPA recommends testing every home regardless of zone classification.

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 with the most user-submitted radon test data in the state.

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
Clarksburg	8.00 pCi/L	3
Gambrills	6.00 pCi/L	3
Elkton	5.33 pCi/L	3
Silver Spring	4.33 pCi/L	3
Chesapeake Beach	14.00 pCi/L	2
Cumberland	9.00 pCi/L	2
Frostburg	9.00 pCi/L	2
Owings	5.50 pCi/L	2
Huntingtown	4.50 pCi/L	2
Mc Henry	20.00 pCi/L	1
Mount Airy	20.00 pCi/L	1