Butler County, PA

ZIP 16046

In ZIP 16046, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Mars Borough Water Works has 1 contaminant at or over an EPA legal limit; 11 contaminants are above health goals, led by pfos at 7.6× California’s Public Health Goal.
• Nearest Superfund site: Hranica Landfill, 9.3 miles away.
• Largest share of modeled toxic air from industry: Ati Precision Finishing LLC - Monaca (24%), 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 16046

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

Based on 12 census tracts · compiled September 10, 2026 · how each grade works and its sources

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