Webster County, KY

ZIP 42409

In ZIP 42409, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Webster Co Water District meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 85× 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: Kaiser Aluminum Warrick (86%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 105,734 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 42409

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

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

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