Webster Parish, LA

ZIP 71018

In ZIP 71018, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: St James Water System meets every EPA legal limit; 9 contaminants are above health goals, led by arsenic at 167× California’s Public Health Goal.
• Nearest Superfund site: Louisiana Army Ammunition Plant, 7.9 miles away.
• Largest share of modeled toxic air from industry: Calumet Cotton Valley Refining LLC Calumet Cotton Valley (89%), mostly benzene.
• 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 71018

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

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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