Jefferson County, NY

ZIP 13603

In ZIP 13603, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Champion Wd 2, 4 & 5 meets every EPA legal limit; 7 contaminants are above health goals, led by bromodichloromethane at 239× California’s Public Health Goal.
• Nearest Superfund site: Crown Cleaners of Watertown Inc., 4.2 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: US Army Fort Drum (60%), mostly cadmium compounds.
• Fine particles (PM2.5) average 5.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 82,549 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 13603

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

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

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