Allegany County, MD

ZIP 21555

In ZIP 21555, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Frankfort Psd Wiley Ford meets every EPA legal limit; 7 contaminants are above health goals, led by di(2-ethylhexyl) phthalate at 6.8× California’s Public Health Goal.
• Nearest Superfund site: Limestone Road, 2.0 miles away.
• Largest share of modeled toxic air from industry: Aes Warrior Run Inc (99%), mostly arsenic compounds.
• Fine particles (PM2.5) average 7.1 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 21555

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

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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