Audrain County, MO

ZIP 63345

In ZIP 63345, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Audrain County Pwsd 1 meets every EPA legal limit; 6 contaminants are above health goals, led by dibromochloromethane at 57× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Harbisonwalker International Inc.- Vandalia Mo Plant (99%), mostly chromium compounds.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 282,746 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 63345

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

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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