Armstrong County, PA

ZIP 15618

In ZIP 15618, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Icmsa Crooked Creek has 1 contaminant at or over an EPA legal limit; 10 contaminants are above health goals, led by arsenic at 9,625× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Ati Flat Rolled Products Llc-Latrobe Plant (20%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 56,687 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 15618

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

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

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