Harford County, MD

ZIP 21154

In ZIP 21154, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Darlington Mobile Home Park has 2 contaminants at or over an EPA legal limit; 4 contaminants are above health goals, led by pfos at 10× California’s Public Health Goal.
• Nearest Superfund site: Woodlawn County Landfill, 7.0 miles away.
• Largest share of modeled toxic air from industry: Goodhart Sons Inc. (56%), 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 21154

• Superfund sites nearbyA to C
• Factories and industrial sitesA to B
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA to B
• Drinking water qualityA to F
• Pesticide useD
• Neighborhood health statusC to F
• Past wildfire impactsA
• Past flood impactsB to C
• Noise levelsA
• Radiation signalsC to F

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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