Knox County, IN

ZIP 47591

In ZIP 47591, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Knox County Water, Inc. meets every EPA legal limit; 5 contaminants are above health goals, led by lead at 30× California’s Public Health Goal.
• Nearest Superfund site: Prestolite Battery Division, 0.9 miles away.
• Largest share of modeled toxic air from industry: Toyota Motor Manufacturing Indiana Inc (35%), mostly arsenic compounds.
• Fine particles (PM2.5) average 8.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 353,362 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 47591

• Superfund sites nearbyC to F
• Factories and industrial sitesB to C
• Oil and gas wellsC to D
• Parks and nature nearbyD to F
• Air qualityC to D
• Drinking water qualityC to F
• Pesticide useF
• Neighborhood health statusC to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsC to D

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

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