Lyon County, KY

ZIP 42055

In ZIP 42055, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Lyon County Water District has 1 contaminant at or over an EPA legal limit; 4 contaminants are above health goals, led by pfos at 4.4× California’s Public Health Goal.
• Closer to Superfund sites than 54% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Westlake Vinyls Inc (46%), mostly diethyl sulfate.
• Fine particles (PM2.5) average 6.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 19,155 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 42055

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

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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