Iredell County, NC

ZIP 28689

In ZIP 28689, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Iredell Water Corporation has 2 contaminants at or over an EPA legal limit; 18 contaminants are above health goals, led by pfos at 4.6× California’s Public Health Goal.
• Nearest Superfund site: Holcomb Creosote Co, 7.6 miles away.
• Largest share of modeled toxic air from industry: U.S. Chemical Storage LLC (98%), mostly chromium.
• Fine particles (PM2.5) average 6.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 88,871 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 28689

• Superfund sites nearbyA to C
• Factories and industrial sitesA to B
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityB
• Drinking water qualityC to F
• Pesticide useF
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA
• Radiation signalsC to D

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

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