Westmoreland County, PA

ZIP 15678

In ZIP 15678, 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; 8 contaminants are above health goals, led by pfos at 1.5× California’s Public Health Goal.
• Nearest Superfund site: Resin Disposal, 7.9 miles away.
• Largest share of modeled toxic air from industry: Duraloy Technologies Inc (31%), mostly chromium.
• Fine particles (PM2.5) average 8.1 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 15678

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

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…