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Arnold, MD Radon Levels

Check local Arnold radon levels and find certified testing and mitigation professionals to keep your home safe


Arnold, MD Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Anne Arundel County, MD
Zip Code 21012
Avg. User Level 5.00 pCi/L
User Tests 1

Arnold in Anne Arundel County within the Baltimore Metro area has measured an average radon level of 5.0 pCi/L, exceeding the EPA action threshold and reflecting the moderate-to-high radon potential along Maryland's Chesapeake Bay region. The community's coastal plain geology and mix of housing types in zip code 21012 create conditions where radon can accumulate in homes. Testing and potential mitigation are recommended for residents in this area.

5.00
pCi/L average
Above EPA Action Level

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

0
4.0 EPA
10+

Arnold, MD Radon Mitigation

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

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Arnold, MD Radon Levels

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

Radon LevelCityHome AgeFoundation
5 pCi/L Arnold, MD 21-50 Years Full Basement

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

Radon FAQ for Arnold, MD

What is the average radon level in Arnold, MD?
Based on 1 user-submitted test, the average radon level in Arnold 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 Arnold in?
Arnold and the 21012 zip code are in Anne Arundel 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 Arnold?
Radon mitigation in Arnold 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 Arnold?
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 in Maryland with the most user-submitted radon test data, ranked by number of submissions.

CityAvg User Radon LevelSubmissions
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
Frostburg 8.67 pCi/L 3