Jarrettsville, MD Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is Jarrettsville in?

Jarrettsville is in Harford County, EPA Zone 1.

Q: How much does radon mitigation cost in Jarrettsville?

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

Avg: 5.00 pCi/L

Harford County

EPA Zone 1

1 user test

Jarrettsville is located in Harford County, Maryland. With 1 user-submitted readings averaging 5.00 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 21084 zip code.

5.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Jarrettsville, MD Radon Mitigation

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

Jarrettsville, MD Radon Testing

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

Jarrettsville, Maryland Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Jarrettsville, MD	100+ Years	Full Basement	Apr 2025

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

Jarrettsville Radon Facts

Key details about the radon risk profile for Jarrettsville and the 21084 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Harford County, MD

Zip Code

21084

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

5.00 pCi/L

User Tests Submitted

Jarrettsville and the 21084 zip code are located in Harford 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 Jarrettsville, MD

What is the average radon level in Jarrettsville, MD?

Based on 1 user-submitted test, the average radon level in Jarrettsville is 5.00 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 Jarrettsville in?

Jarrettsville and the 21084 zip code are in Harford 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 Jarrettsville?

Radon mitigation in Jarrettsville 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 Jarrettsville?

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