Harford County, MD

ZIP 21047

In ZIP 21047, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Maryland American Water Company has 1 contaminant at or over an EPA legal limit; 9 contaminants are above health goals, led by pfos at 4.3× California’s Public Health Goal.
• Nearest Superfund site: Bush Valley Landfill, 6.3 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Tate Access Floors Inc. (67%), mostly chromium.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 93,693 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 21047

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

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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