Keymar, MD Radon Levels
Check local Keymar radon levels and find certified testing and mitigation professionals to keep your home safe
Keymar, MD Radon Facts
EPA Radon Zone
Zone 1 — High Risk
> 4.0 pCi/L (Zone 1)
County
Frederick County, MD
Zip Code
21757
Situated in Frederick County within the greater Baltimore-Washington corridor, Keymar sits in Maryland's Piedmont region where metamorphic rocks can create elevated radon conditions. The rural community features a mix of historic farmhouses and newer residential construction. With no recent testing data available for zip code 21757, residents should prioritize radon testing given the area's geological potential for elevated readings.
Keymar, MD Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Keymar?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Frederick County Pros
Radon FAQ for Keymar, MD
What EPA Radon Zone is Keymar in?
Keymar and the 21757 zip code are in Frederick 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 Keymar?
Radon mitigation in Keymar 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 Keymar?
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.
| 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 |
| Frostburg | 8.67 pCi/L | 3 |