Webster Parish, LA

ZIP 71055

In ZIP 71055, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Town Of Sibley Water System meets every EPA legal limit; 11 contaminants are above health goals, led by lead at 184× California’s Public Health Goal.
• Nearest Superfund site: Louisiana Army Ammunition Plant, 7.9 miles away.
• Largest share of modeled toxic air from industry: International Paper Co - Mansfield Mill (27%), mostly formaldehyde.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 8,578 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 71055

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

Based on 12 census tracts · compiled September 10, 2026 · how each grade works and its sources

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