Nassau County, NY
ZIP 11561
In ZIP 11561, 5 of the 12 things we check have at least one part graded D or F.
- Drinking water: Liberty Utilities New York - Merrick meets every EPA legal limit; 13 contaminants are above health goals, led by lead at 16× California’s Public Health Goal.
- Nearest Superfund site: Peninsula Boulevard Groundwater Plume, 8.1 miles away (3 within 10 miles).
- Largest share of modeled toxic air from industry: Eto Sterilization (60%), mostly ethylene oxide.
- Fine particles (PM2.5) average 7.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
- About 348 kg of agricultural pesticides are applied in the county each year.
Grades for ZIP 11561
- Superfund sites nearbyD
- Factories and industrial sitesA to B
- Oil and gas wellsA
- Parks and nature nearbyC to F
- Air qualityC to D
- Drinking water qualityC to D
- Pesticide useA
- Neighborhood health statusA to C
- Past wildfire impactsA
- Past flood impactsC
- Noise levelsA to D
Based on 10 census tracts · compiled September 10, 2026 · how each grade works and its sources
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