Butler County, PA

ZIP 16056

In ZIP 16056, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Pa American Water Co Butler meets every EPA legal limit; 8 contaminants are above health goals, led by bromodichloromethane at 186× California’s Public Health Goal.
• Nearest Superfund site: Hranica Landfill, 5.6 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Ati Precision Finishing LLC - Monaca (19%), mostly chromium compounds.
• Fine particles (PM2.5) average 8.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 61,517 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 16056

• Superfund sites nearbyA to C
• Factories and industrial sitesC to D
• Oil and gas wellsF
• Parks and nature nearbyC
• Air qualityC to D
• Drinking water qualityB to C
• Pesticide useD
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsF
• Noise levelsA
• Radiation signalsF

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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