Winn Parish, LA

ZIP 71404

In ZIP 71404, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Tannehill Water System meets every EPA legal limit; 10 contaminants are above health goals, led by lead at 53× California’s Public Health Goal.
• Nearest Superfund site: American Creosote Works, Inc. (winnfield Plant), 8.7 miles away.
• Largest share of modeled toxic air from industry: Arclin USA LLC (46%), mostly formaldehyde.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 2,025 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 71404

• Superfund sites nearbyA to D
• Factories and industrial sitesA to B
• Oil and gas wellsA to D
• Parks and nature nearbyB to C
• Air qualityB
• Drinking water qualityD to F
• Pesticide useC to D
• Neighborhood health statusC to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsB to C

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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