Chester County, PA
ZIP 19335
In ZIP 19335, 8 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: Carpenter Technology Corp (41%), mostly chromium.
- Fine particles (PM2.5) average 8.0 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 19335
- 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 statusA to C
- Past wildfire impactsA
- Past flood impactsC
- Noise levelsA to D
- Radiation signalsD to F
Based on 19 census tracts · compiled September 10, 2026 · how each grade works and its sources
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