Susquehanna County, PA

ZIP 18421

In ZIP 18421, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Aqua Pa Water Co Waymart meets every EPA legal limit; 12 contaminants are above health goals, led by pfos at 2.3× 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: Alleima USA LLC (95%), mostly chromium.
• Fine particles (PM2.5) average 6.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 23,501 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 18421

• Superfund sites nearbyA
• Factories and industrial sitesA to C
• Oil and gas wellsA to D
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityD to F
• Pesticide useC to F
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsB to C
• Noise levelsA
• Radiation signalsD to F

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

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