Grantsville, MD Radon Mitigation and Testing

Q: What EPA Radon Zone is Grantsville in?

Grantsville is in Garrett County, EPA Zone 2.

Q: How much does radon mitigation cost in Grantsville?

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

Garrett County

EPA Zone 2

Perched in Garrett County in Maryland's mountainous western panhandle, Grantsville sits on Appalachian plateau formations of shale and sandstone that can produce variable radon levels. Although specific radon data for zip code 21536 is currently limited, the area's complex geology and elevation changes suggest testing is important. Mountain communities like Grantsville often see varying radon concentrations depending on local rock formations and home foundation types.

Grantsville, MD Radon Mitigation

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

Grantsville, MD Radon Testing

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

Grantsville Radon Facts

Key details about the radon risk profile for Grantsville and the 21536 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Garrett County, MD

Zip Code

21536

Predicted Screening Level

2–4 pCi/L (Zone 2)

Grantsville and the 21536 zip code are located in Garrett County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Grantsville, MD

What EPA Radon Zone is Grantsville in?

Grantsville and the 21536 zip code are in Garrett County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Grantsville?

Radon mitigation in Grantsville 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 Grantsville?

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