Mercer County, IL

ZIP 61476

In ZIP 61476, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Keithsburg meets every EPA legal limit; 7 contaminants are above health goals, led by arsenic at 965× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Big River Resources West Burlington LLC (43%), mostly acrolein.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 284,216 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 61476

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

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

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