Armstrong County, PA

ZIP 16201

In ZIP 16201, 7 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: Hranica Landfill, 7.8 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Keystone Power Plant (26%), mostly arsenic compounds.
• Fine particles (PM2.5) average 7.3 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 16201

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

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

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