Jefferson County, KY

ZIP 40209

In ZIP 40209, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Louisville Water Company has 3 contaminants at or over an EPA legal limit; 15 contaminants are above health goals, led by lead at 21× California’s Public Health Goal.
• Nearest Superfund site: A.l. Taylor (valley of Drums), 5.7 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: O'Neal Manufacturing Services (73%), mostly chromium.
• Fine particles (PM2.5) average 9.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 8,583 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 40209

• Superfund sites nearbyA to D
• Factories and industrial sitesF
• Oil and gas wellsB
• Parks and nature nearbyD to F
• Air qualityF
• Drinking water qualityD
• Pesticide useB
• Neighborhood health statusB to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsC to F
• Radiation signalsD

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

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