Calcasieu Parish, LA

ZIP 70633

In ZIP 70633, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Houston River Waterworks District 11 meets every EPA legal limit; 10 contaminants are above health goals, led by arsenic at 167× California’s Public Health Goal.
• Closer to Superfund sites than 55% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Lacc LLC Us/Lotte Chemical Louisiana LLC (40%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 25,457 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 70633

• Superfund sites nearbyA to C
• Factories and industrial sitesF
• Oil and gas wellsB to F
• Parks and nature nearbyC
• Air qualityB
• Drinking water qualityB to C
• Pesticide useC to F
• Neighborhood health statusC to F
• Past wildfire impactsA
• Past flood impactsB to C
• Noise levelsA to D
• Radiation signalsA to B

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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