Middlesex County, CT

ZIP 06413

In ZIP 06413, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Ctwc - Shoreline Region-Guilford System has 2 contaminants at or over an EPA legal limit; 16 contaminants are above health goals, led by pfos at 8× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Ametek Specialty Metal Products Div (45%), mostly cobalt compounds.
• Fine particles (PM2.5) average 5.8 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 06413

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

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

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