St. Lawrence County, NY

ZIP 13648

In ZIP 13648, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Star Lake Water District meets every EPA legal limit; 7 contaminants are above health goals, led by chloroform at 104× California’s Public Health Goal.
• Nearest Superfund site: Black River Pcbs, 9.9 miles away.
• Largest share of modeled toxic air from industry: St Lawrence Zinc Co Balmat 4 Mine & Mill (100%), 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 13648

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

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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