Madison County, IL

ZIP 62294

In ZIP 62294, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: O Fallon meets every EPA legal limit; 11 contaminants are above health goals, led by lead at 40× California’s Public Health Goal.
• Nearest Superfund site: Chemetco, 8.8 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Wood River Refinery (69%), mostly chromium compounds.
• Fine particles (PM2.5) average 8.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 324,443 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 62294

• Superfund sites nearbyA to C
• Factories and industrial sitesB to C
• Oil and gas wellsB to F
• Parks and nature nearbyD
• Air qualityC to D
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsD

Based on 6 census tracts · compiled September 10, 2026 · how each grade works and its sources

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