Jefferson County, PA

ZIP 15851

In ZIP 15851, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Henderson Township Mun Auth meets every EPA legal limit; 6 contaminants are above health goals, led by chloroform at 2.5× California’s Public Health Goal.
• Closer to Superfund sites than 91% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Owens-Brockway Glass Container Inc Plant 18 (90%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 23,193 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 15851

• Superfund sites nearbyA to F
• Factories and industrial sitesA to B
• Oil and gas wellsF
• Parks and nature nearbyB
• Air qualityB
• Drinking water qualityA to C
• Pesticide useC to D
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsC to F
• Noise levelsA to D
• Radiation signalsD to F

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

Loading the full report, with every source…