Chester County, PA

ZIP 19320

In ZIP 19320, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Aqua Pa Main System has 2 contaminants at or over an EPA legal limit; 25 contaminants are above health goals, led by lead at 88× California’s Public Health Goal.
• Nearest Superfund site: William Dick Lagoons, 4.6 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Goodhart Sons Inc. (59%), mostly chromium.
• Fine particles (PM2.5) average 8.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 156,614 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 19320

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

Based on 18 census tracts · compiled September 10, 2026 · how each grade works and its sources

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