Erie County, PA

ZIP 16503

In ZIP 16503, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Erie City Water Authority meets every EPA legal limit; 17 contaminants are above health goals, led by arsenic at 1,100× California’s Public Health Goal.
• Nearest Superfund site: Presque Isle, 3.8 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Cosmed Of Pennsylvania (100%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 175,539 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 16503

• Superfund sites nearbyC to D
• Factories and industrial sitesD to F
• Oil and gas wellsF
• Parks and nature nearbyD to F
• Air qualityB to D
• Drinking water qualityD
• Pesticide useD
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to F
• Radiation signalsC

Based on 12 census tracts · compiled September 10, 2026 · how each grade works and its sources

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