Mississippi County, MO

ZIP 63823

In ZIP 63823, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Wickliffe Municipal Water System has 3 contaminants at or over an EPA legal limit; 8 contaminants are above health goals, led by lead at 75× California’s Public Health Goal.
• Nearest Superfund site: Quality Plating, 2.7 miles away.
• Largest share of modeled toxic air from industry: Midwest Sterilization Corp (64%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 228,864 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 63823

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

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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