Chester County, PA

ZIP 19301

In ZIP 19301, 5 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; 18 contaminants are above health goals, led by pfoa at 943× California’s Public Health Goal.
• Nearest Superfund site: Paoli Rail Yard, 0.6 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Superior Tube Co Inc (31%), mostly 1-bromopropane.
• Fine particles (PM2.5) average 7.9 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 19301

• Superfund sites nearbyF
• Factories and industrial sitesC
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityC
• Drinking water qualityF
• Pesticide useC to D
• Neighborhood health statusA to B
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsD

Based on 7 census tracts · compiled October 25, 2026 · how each grade works and its sources

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