Richland County, IL

ZIP 62421

In ZIP 62421, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: West Liberty-Dundas Water District meets every EPA legal limit; 6 contaminants are above health goals, led by chloroform at 125× California’s Public Health Goal.
• Nearest Superfund site: Indian Refinery-Texaco Lawrenceville, 4.2 miles away.
• Largest share of modeled toxic air from industry: Marathon Petroleum Co LP Illinois Refining Div (87%), mostly benzene.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 188,841 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 62421

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

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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