Tangipahoa Parish, LA

ZIP 70401

In ZIP 70401, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Fourth Ward Water Works meets every EPA legal limit; 10 contaminants are above health goals, led by lead at 540× California’s Public Health Goal.
• Closer to Superfund sites than 54% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Evonik Corp (57%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 124,831 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 70401

• Superfund sites nearbyA to C
• Factories and industrial sitesB to D
• Oil and gas wellsA to D
• Parks and nature nearbyC to F
• Air qualityB to C
• Drinking water qualityD to F
• Pesticide useD to F
• Neighborhood health statusB to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsB

Based on 14 census tracts · compiled September 10, 2026 · how each grade works and its sources

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