Middlesex County, CT

ZIP 06457

In ZIP 06457, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Connecticut Valley Hospital meets every EPA legal limit; 8 contaminants are above health goals, led by arsenic at 350× California’s Public Health Goal.
• Nearest Superfund site: Durham Meadows, 5.2 miles away.
• Largest share of modeled toxic air from industry: Assa Abloy Access & Egress Hardware Group - Corbin Russwin (23%), mostly chromium compounds.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 9,046 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 06457

• Superfund sites nearbyA to D
• Factories and industrial sitesC to D
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityA to B
• Drinking water qualityB to F
• Pesticide useC
• Neighborhood health statusA to D
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsB to F

Based on 13 census tracts · compiled October 25, 2026 · how each grade works and its sources

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