Jefferson County, MO

ZIP 63051

In ZIP 63051, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Weber Hill Mhp meets every EPA legal limit; 2 contaminants are above health goals, led by lead at 30× California’s Public Health Goal.
• Nearest Superfund site: Southwest Jefferson County Mining, 7.7 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Metaltek International Inc. (39%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 17,788 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 63051

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

Based on 7 census tracts · compiled September 10, 2026 · how each grade works and its sources

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