Jefferson Parish, LA

ZIP 70003

In ZIP 70003, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: St Charles Parish Dept Of Waterworks meets every EPA legal limit; 19 contaminants are above health goals, led by bromodichloromethane at 244× 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 (41%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.9 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 70003

• Superfund sites nearbyA to C
• Factories and industrial sitesD to F
• Oil and gas wellsA to D
• Parks and nature nearbyD to F
• Air qualityF
• Drinking water qualityD
• Pesticide useA to B
• Neighborhood health statusC to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to F
• Radiation signalsB

Based on 21 census tracts · compiled September 10, 2026 · how each grade works and its sources

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