Williamson County, IL

ZIP 62902

In ZIP 62902, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Devils Kitchen Water District meets every EPA legal limit; 6 contaminants are above health goals, led by lead at 72× California’s Public Health Goal.
• Nearest Superfund site: Sangamo Electric Dump/crab Orchard National Wildlife Refuge (usdoi), 2.3 miles away.
• Largest share of modeled toxic air from industry: Southern Illinois Power Cooperative (89%), mostly sulfuric acid.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 63,088 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 62902

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

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

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