Silver Spring, MD Radon Mitigation and Testing

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.

Avg: 4.30 pCi/L

Montgomery County

EPA Zone 1

3 user tests

Silver Spring is located in Montgomery County, Maryland. With 3 user-submitted readings averaging 4.30 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 20901 zip code.

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

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

Silver Spring, MD Radon Testing

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

Silver Spring, Maryland Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
4 pCi/L	Silver Spring, MD	51-99 Years	—	Jul 2021
5 pCi/L	Silver Spring, MD	21-50 Years	Full Basement	Sep 2020
4 pCi/L	Silver Spring, MD	51-99 Years	Full Basement	Jul 2017

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

Silver Spring Radon Facts

Key details about the radon risk profile for Silver Spring and the 20901 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Montgomery County, MD

Zip Code

20901

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

4.30 pCi/L

User Tests Submitted

Silver Spring and the 20901 zip code are located in Montgomery 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 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 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