Fairfield County, CT

ZIP 06851

In ZIP 06851, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Norwalk First Taxing District has 2 contaminants at or over an EPA legal limit; 7 contaminants are above health goals, led by pfoa at 757× California’s Public Health Goal.
• Nearest Superfund site: Kellogg-Deering Well Field, 1.4 miles away.
• Largest share of modeled toxic air from industry: King Industries Inc (27%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 7,578 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 06851

• Superfund sites nearbyD to F
• Factories and industrial sitesB to F
• Oil and gas wellsA
• Parks and nature nearbyB to D
• Air qualityB to C
• Drinking water qualityC to F
• Pesticide useB
• Neighborhood health statusA to B
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D

Based on 8 census tracts · compiled October 25, 2026 · how each grade works and its sources

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