Iredell County, NC

ZIP 28166

In ZIP 28166, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Winding Forest/Bells Crossing S/D meets every EPA legal limit; 4 contaminants are above health goals, led by lead at 103× California’s Public Health Goal.
• Nearest Superfund site: Sigmon's Septic Tank Service, 2.4 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Chroma Color Corp (19%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 78,506 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 28166

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

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

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