Webster Parish, LA

ZIP 71023

In ZIP 71023, 6 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; 9 contaminants are above health goals, led by pfoa at 100× 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 7.4 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 71023

• Superfund sites nearbyC to F
• Factories and industrial sitesA to B
• Oil and gas wellsC to F
• Parks and nature nearbyB to C
• Air qualityB to C
• Drinking water qualityA to D
• Pesticide useC to D
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA to D
• Radiation signalsA to C

Based on 6 census tracts · compiled October 25, 2026 · how each grade works and its sources

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