Lewis County, MO

ZIP 63435

In ZIP 63435, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Lagrange Pws has 1 contaminant at or over an EPA legal limit; 11 contaminants are above health goals, led by pfos at 5.2× 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 (42%), mostly 1,2-dichloroethane.
• Fine particles (PM2.5) average 6.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 148,423 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 63435

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

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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