Muhlenberg County, KY

ZIP 42345

In ZIP 42345, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Ohio County Water District meets every EPA legal limit; 8 contaminants are above health goals, led by arsenic at 134× 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: Rane Light Metal Castings Inc (51%), mostly nickel.
• Fine particles (PM2.5) average 7.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 140,872 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 42345

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

Based on 7 census tracts · compiled October 25, 2026 · how each grade works and its sources

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