Jefferson County, KY

ZIP 40258

In ZIP 40258, 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: Lee's Lane Landfill, 5.1 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Misa Metal Fabricating Inc (47%), mostly chromium.
• Fine particles (PM2.5) average 8.7 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 40258

• Superfund sites nearbyA to D
• Factories and industrial sitesD to F
• Oil and gas wellsD
• Parks and nature nearbyC to F
• Air qualityD to F
• Drinking water qualityD
• Pesticide useB to C
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to B
• Radiation signalsC to D

Based on 9 census tracts · compiled September 10, 2026 · how each grade works and its sources

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