Warren County, KY

ZIP 42101

In ZIP 42101, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Butler County Water System Inc meets every EPA legal limit; 7 contaminants are above health goals, led by arsenic at 83× 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: Trace Die Cast Inc (93%), mostly chromium.
• Fine particles (PM2.5) average 7.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 111,064 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 42101

• Superfund sites nearbyA
• Factories and industrial sitesB to F
• Oil and gas wellsF
• Parks and nature nearbyB to D
• Air qualityB to D
• Drinking water qualityB to C
• Pesticide useC to F
• Neighborhood health statusA to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsC to D

Based on 21 census tracts · compiled October 25, 2026 · how each grade works and its sources

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