Middlesex County, CT

ZIP 06480

In ZIP 06480, 1 of the 12 things we check have at least one part graded D or F.

• Drinking water: Portland Water Department meets every EPA legal limit; 5 contaminants are above health goals, led by bromodichloromethane at 72× California’s Public Health Goal.
• Nearest Superfund site: Durham Meadows, 7.6 miles away.
• Largest share of modeled toxic air from industry: Assa Abloy Access & Egress Hardware Group - Corbin Russwin (24%), mostly chromium compounds.
• Fine particles (PM2.5) average 6.0 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 06480

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

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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