New Haven County, CT

ZIP 06477

In ZIP 06477, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Regional Water Authority meets every EPA legal limit; 11 contaminants are above health goals, led by pfos at 2.9× California’s Public Health Goal.
• Nearest Superfund site: Raymark Industries, Inc., 9.4 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Covidien LP (25%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 25,447 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 06477

• Superfund sites nearbyC to D
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityA to B
• Drinking water qualityC
• Pesticide useB
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsF

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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