Westmoreland County, PA

ZIP 15670

In ZIP 15670, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Highridge Water Auth has 3 contaminants at or over an EPA legal limit; 14 contaminants are above health goals, led by pfos at 4.5× 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 (68%), mostly cobalt compounds.
• Fine particles (PM2.5) average 7.6 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 15670

• Superfund sites nearbyA
• Factories and industrial sitesC to D
• 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 impactsD
• Noise levelsA to B
• Radiation signalsD to F

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

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