Tall Timbers, MD Radon Mitigation and Testing

Q: What EPA Radon Zone is Tall Timbers in?

Tall Timbers is in St Mary's County, EPA Zone Unknown.

Q: How much does radon mitigation cost in Tall Timbers?

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

St Mary's County

EPA Zone Unknown

Tall Timbers, MD resides in St Mary's County, which has an EPA assigned Radon Zone of Unknown. A zone of Unknown does not have sufficient data for classification. Testing is recommended for all homes in the 20690 zip code area.

Tall Timbers, MD Radon Mitigation

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

Tall Timbers, MD Radon Testing

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

Tall Timbers Radon Facts

Key details about the radon risk profile for Tall Timbers and the 20690 zip code area.

EPA Radon Zone

Unknown

County

St Mary's County, MD

Zip Code

20690

Predicted Screening Level

Unknown

Tall Timbers and the 20690 zip code are located in St Mary's 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 Tall Timbers, MD

What EPA Radon Zone is Tall Timbers in?

Tall Timbers and the 20690 zip code are in St Mary's 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 Tall Timbers?

Radon mitigation in Tall Timbers 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 Tall Timbers?

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