Northumberland County, PA

ZIP 17857

In ZIP 17857, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Pa American White Deer meets every EPA legal limit; 8 contaminants are above health goals, led by bromodichloromethane at 166× California’s Public Health Goal.
• Nearest Superfund site: Mw Manufacturing, 7.3 miles away.
• Largest share of modeled toxic air from industry: Arxada LLC (72%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 105,057 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 17857

• Superfund sites nearbyA to C
• Factories and industrial sitesC to D
• Oil and gas wellsB
• Parks and nature nearbyB to C
• Air qualityC
• Drinking water qualityC
• Pesticide useD to F
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to C
• Radiation signalsF

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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