Westchester County, NY

ZIP 10591

In ZIP 10591, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Kensico Water District meets every EPA legal limit; 6 contaminants are above health goals, led by chloroform at 92× California’s Public Health Goal.
• Closer to Superfund sites than 85% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Zimmer Biomet (36%), mostly cobalt.
• Fine particles (PM2.5) average 7.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 5,510 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 10591

• Superfund sites nearbyD to F
• Factories and industrial sitesB to C
• Oil and gas wellsA
• Parks and nature nearbyB
• Air qualityB to C
• Drinking water qualityB to C
• Pesticide useA to B
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsC to D
• Noise levelsA to D

Based on 8 census tracts · compiled October 25, 2026 · how each grade works and its sources

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