Mercer County, IL

ZIP 61412

In ZIP 61412, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Viola has 1 contaminant at or over an EPA legal limit; 9 contaminants are above health goals, led by arsenic at 180× California’s Public Health Goal.
• Nearest Superfund site: Galesburg/koppers Co., 8.0 miles away.
• Largest share of modeled toxic air from industry: Big River Resources Galva LLC (57%), mostly acrolein.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 346,963 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 61412

• Superfund sites nearbyA to C
• Factories and industrial sitesB to D
• Oil and gas wellsA
• Parks and nature nearbyC to F
• Air qualityB to C
• Drinking water qualityB to F
• Pesticide useF
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsF

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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