Marion County, MO

ZIP 63456

In ZIP 63456, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Cannon Pwsd 1 meets every EPA legal limit; 8 contaminants are above health goals, led by lead at 16× 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: Basf Corp - Hannibal Site (44%), mostly 1,2-dichloroethane.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 138,318 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 63456

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

Based on 4 census tracts · compiled September 10, 2026 · how each grade works and its sources

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