New London County, CT

ZIP 06379

In ZIP 06379, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Westerly Water Department has 2 contaminants at or over an EPA legal limit; 12 contaminants are above health goals, led by pfos at 4.5× California’s Public Health Goal.
• Nearest Superfund site: New London Submarine Base, 8.0 miles away.
• Largest share of modeled toxic air from industry: Pcc Structurals (74%), mostly cobalt.
• Fine particles (PM2.5) average 5.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 21,460 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 06379

• Superfund sites nearbyA to C
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityA
• Drinking water qualityB to F
• Pesticide useD
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to C

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

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