Armstrong County, PA

ZIP 15656

In ZIP 15656, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Mawc Sweeney Plant meets every EPA legal limit; 9 contaminants are above health goals, led by lead at 60× California’s Public Health Goal.
• Nearest Superfund site: Lindane Dump, 4.7 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Ppg Industriesinc-Springdale Complex (18%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 40,298 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 15656

• Superfund sites nearbyA to D
• Factories and industrial sitesB to C
• Oil and gas wellsF
• Parks and nature nearbyC to D
• Air qualityC to D
• Drinking water qualityC to F
• Pesticide useD to F
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsC to D
• Noise levelsA to B
• Radiation signalsD

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

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