Iredell County, NC

ZIP 28117

In ZIP 28117, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Mallard Head S/D meets every EPA legal limit; 8 contaminants are above health goals, led by trichloroacetic acid at 122× California’s Public Health Goal.
• Nearest Superfund site: Sigmon's Septic Tank Service, 7.3 miles away.
• Largest share of modeled toxic air from industry: Jim Myers & Sons Inc (62%), mostly chromium.
• Fine particles (PM2.5) average 7.7 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 28117

• Superfund sites nearbyA to C
• Factories and industrial sitesB to D
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityC
• Drinking water qualityA to F
• Pesticide useC to D
• Neighborhood health statusA to F
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA to D
• Radiation signalsA to B

Based on 12 census tracts · compiled October 25, 2026 · how each grade works and its sources

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