Ulster County, NY

ZIP 12491

In ZIP 12491, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: L & D Mobile Home Park, Llc has 2 contaminants at or over an EPA legal limit; 8 contaminants are above health goals, led by arsenic at 2,569× California’s Public Health Goal.
• Nearest Superfund site: Mohonk Road Industrial Plant, 3.4 miles away.
• Largest share of modeled toxic air from industry: Ecobat Resources New York LLC (38%), mostly arsenic compounds.
• Fine particles (PM2.5) average 6.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 213,264 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 12491

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

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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