Nassau County, NY

ZIP 11714

In ZIP 11714, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Hicksville Wd has 2 contaminants at or over an EPA legal limit; 25 contaminants are above health goals, led by trichloroethylene at 4.2× California’s Public Health Goal.
• Nearest Superfund site: Liberty Industrial Finishing, 1.5 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Oerlikon Metco (US) Inc (87%), mostly chromium.
• Fine particles (PM2.5) average 8.2 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 11714

• Superfund sites nearbyF
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyF
• Air qualityC to D
• Drinking water qualityD to F
• Pesticide useA
• Neighborhood health statusA to B
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsB

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…