New Haven County, CT

ZIP 06518

In ZIP 06518, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Wallingford Water Department has 1 contaminant at or over an EPA legal limit; 19 contaminants are above health goals, led by pfos at 12× California’s Public Health Goal.
• Nearest Superfund site: Beacon Heights Landfill, 5.5 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Ametek Specialty Metal Products Div (28%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.9 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 06518

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

Based on 4 census tracts · compiled September 10, 2026 · how each grade works and its sources

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