Jackson County, IL

ZIP 62903

In ZIP 62903, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Chester meets every EPA legal limit; 11 contaminants are above health goals, led by pfos at 1.6× California’s Public Health Goal.
• Nearest Superfund site: Sangamo Electric Dump/crab Orchard National Wildlife Refuge (usdoi), 9.8 miles away.
• Largest share of modeled toxic air from industry: Southern Illinois Power Cooperative (82%), 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 186,546 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 62903

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

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

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