Perry Hall, MD Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 4.00 pCi/L.

Q: What EPA Radon Zone is Perry Hall in?

Perry Hall is in Baltimore County, EPA Zone 1.

Q: How much does radon mitigation cost in Perry Hall?

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

Avg: 4.00 pCi/L

Baltimore County

EPA Zone 1

1 user test

This Baltimore County community in the Baltimore Metro area shows an average radon level of 4.0 pCi/L, right at the EPA action threshold based on current testing data. Homes in the 21128 zip code area, built predominantly in the mid-to-late 20th century with full basements, should be tested regularly since radon levels can vary significantly even within the same neighborhood.

4.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Perry Hall, MD Radon Mitigation

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

Perry Hall, MD Radon Testing

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

Perry Hall, Maryland Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
4 pCi/L	Perry Hall, MD	0-20 Years	Full Basement	Apr 2025

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

Perry Hall Radon Facts

Key details about the radon risk profile for Perry Hall and the 21128 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Baltimore County, MD

Zip Code

21128

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

4.00 pCi/L

User Tests Submitted

Perry Hall and the 21128 zip code are located in Baltimore County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Perry Hall, MD

What is the average radon level in Perry Hall, MD?

Based on 1 user-submitted test, the average radon level in Perry Hall is 4.00 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 Perry Hall in?

Perry Hall and the 21128 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 Perry Hall?

Radon mitigation in Perry Hall 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 Perry Hall?

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