Madison, MD Radon Mitigation and Testing

Q: What EPA Radon Zone is Madison in?

Madison is in Dorchester County, EPA Zone 3.

Q: How much does radon mitigation cost in Madison?

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

Dorchester County

EPA Zone 3

Located in Dorchester County on Maryland's Eastern Shore, Madison sits on coastal plain sediments where radon levels are typically lower but can still vary by individual property location. Testing data for zip code 21648 remains limited, making professional radon testing valuable for homeowners seeking comprehensive indoor air quality assessment. The area's mix of waterfront properties and inland homes both benefit from radon monitoring, particularly those with enclosed foundation spaces.

Madison, MD Radon Mitigation

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

Madison, MD Radon Testing

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

Madison Radon Facts

Key details about the radon risk profile for Madison and the 21648 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Dorchester County, MD

Zip Code

21648

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Madison and the 21648 zip code are located in Dorchester County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Madison, MD

What EPA Radon Zone is Madison in?

Madison and the 21648 zip code are in Dorchester County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Madison?

Radon mitigation in Madison 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 Madison?

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