Suffolk County, NY

ZIP 11755

In ZIP 11755, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: St James Water District has 1 contaminant at or over an EPA legal limit; 2 contaminants are above health goals, led by pfos at 3.1× California’s Public Health Goal.
• Nearest Superfund site: Bioclinical Laboratories, Inc., 4.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Long Island Sterilization (35%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 167,580 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 11755

• Superfund sites nearbyD to F
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyB to D
• Air qualityA to B
• Drinking water qualityC to D
• Pesticide useB to D
• Neighborhood health statusA to D
• Past wildfire impactsA
• Past flood impactsD
• Noise levelsA

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

Loading the full report, with every source…