Jefferson Parish, LA

ZIP 70123

In ZIP 70123, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: W Jefferson Ww District 2 meets every EPA legal limit; 10 contaminants are above health goals, led by arsenic at 303× California’s Public Health Goal.
• Nearest Superfund site: Agriculture Street Landfill, 7.8 miles away.
• Largest share of modeled toxic air from industry: St Charles Operations (Taft/Star) Union Carbide Corp (40%), mostly ethylene oxide.
• Fine particles (PM2.5) average 9.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 434 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 70123

• Superfund sites nearbyA to C
• Factories and industrial sitesF
• Oil and gas wellsD
• Parks and nature nearbyB to C
• Air qualityF
• Drinking water qualityC
• Pesticide useA
• Neighborhood health statusA to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsA

Based on 10 census tracts · compiled October 25, 2026 · how each grade works and its sources

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