Chester County, PA

ZIP 19312

In ZIP 19312, 6 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: Paoli Rail Yard, 5.1 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Superior Tube Co Inc (27%), mostly 1-bromopropane.
• Fine particles (PM2.5) average 7.3 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 19312

• Superfund sites nearbyD to F
• Factories and industrial sitesC to D
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityC
• Drinking water qualityF
• Pesticide useB to F
• Neighborhood health statusB
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to B
• Radiation signalsD

Based on 7 census tracts · compiled September 10, 2026 · how each grade works and its sources

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