Allegany County, MD

ZIP 21545

In ZIP 21545, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Barrelville has 1 contaminant at or over an EPA legal limit; 3 contaminants are above health goals, led by arsenic at 4,500× California’s Public Health Goal.
• Nearest Superfund site: Limestone Road, 6.0 miles away.
• Largest share of modeled toxic air from industry: Aes Warrior Run Inc (84%), mostly arsenic compounds.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 16,147 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 21545

• Superfund sites nearbyA to D
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityB
• Drinking water qualityC to F
• Pesticide useD to F
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsD
• Noise levelsA to D
• Radiation signalsD to F

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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