Mississippi County, MO

ZIP 63845

In ZIP 63845, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Mississippi County Pwsd 1 meets every EPA legal limit; 7 contaminants are above health goals, led by bromodichloromethane at 63× California’s Public Health Goal.
• Closer to Superfund sites than 56% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Magnitude 7 Metals LLC (47%), mostly polycyclic aromatic compounds.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 575,590 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 63845

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

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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