Lewis County, NY

ZIP 13665

In ZIP 13665, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Harrisville (Diana Wd 1) meets every EPA legal limit; 5 contaminants are above health goals, led by dibromochloromethane at 6.7× California’s Public Health Goal.
• Nearest Superfund site: Black River Pcbs, 3.6 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: St Lawrence Zinc Co Balmat 4 Mine & Mill (78%), mostly cadmium compounds.
• Fine particles (PM2.5) average 5.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 47,471 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 13665

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

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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