Westchester County, NY

ZIP 10505

In ZIP 10505, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Heritage Hills Water System has 3 contaminants at or over an EPA legal limit; 10 contaminants are above health goals, led by pfos at 5.7× California’s Public Health Goal.
• Nearest Superfund site: Katonah Municipal Well, 5.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Colors & Effects USA LLC - Peekskill Facility (48%), mostly chromium compounds.
• Fine particles (PM2.5) average 6.7 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 10505

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

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

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