St. Clair County, IL

ZIP 62240

In ZIP 62240, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Prairie Dupont Pwd meets every EPA legal limit; 7 contaminants are above health goals, led by bromodichloromethane at 65× California’s Public Health Goal.
• Nearest Superfund site: Sauget Area 1, 4.1 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Wood River Refinery (14%), mostly chromium compounds.
• Fine particles (PM2.5) average 9.3 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 62240

• Superfund sites nearbyF
• Factories and industrial sitesD to F
• Oil and gas wellsF
• Parks and nature nearbyC
• Air qualityD to F
• Drinking water qualityC
• Pesticide useF
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsC

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

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