Johnson County, IL

ZIP 62943

In ZIP 62943, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Paducah Water Works has 2 contaminants at or over an EPA legal limit; 16 contaminants are above health goals, led by pfos at 6× California’s Public Health Goal.
• Nearest Superfund site: Paducah Gaseous Diffusion Plant (usdoe), 8.0 miles away.
• Largest share of modeled toxic air from industry: Isp Chemicals LLC (36%), mostly diethyl sulfate.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 18,073 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 62943

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

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

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