Harford County, MD

ZIP 21017

In ZIP 21017, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Harford County D.p.w. meets every EPA legal limit; 8 contaminants are above health goals, led by arsenic at 175× California’s Public Health Goal.
• Nearest Superfund site: Bush Valley Landfill, 1.2 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Independent Can Co (80%), mostly naphthalene.
• Fine particles (PM2.5) average 7.8 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 21017

• Superfund sites nearbyF
• Factories and industrial sitesC to D
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityB to C
• Drinking water qualityC
• Pesticide useC to F
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsB to C
• Noise levelsA

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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