Chester County, PA

ZIP 19374

In ZIP 19374, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Chester Water Authority meets every EPA legal limit; 12 contaminants are above health goals, led by lead at 48× California’s Public Health Goal.
• Nearest Superfund site: Hockessin Groundwater, 3.4 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Goodhart Sons Inc. (79%), mostly chromium.
• Fine particles (PM2.5) average 6.9 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 19374

• Superfund sites nearbyD
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityB
• Drinking water qualityF
• Pesticide useD
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsD

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…