Tangipahoa Parish, LA

ZIP 70402

In ZIP 70402, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Hammond Water System meets every EPA legal limit; 9 contaminants are above health goals, led by lead at 10× California’s Public Health Goal.
• Nearest Superfund site: Delatte Metals, 6.8 miles away.
• Largest share of modeled toxic air from industry: Shaw Walker La LLC (89%), mostly chromium.
• 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 70402

• Superfund sites nearbyA
• Factories and industrial sitesC
• Oil and gas wellsA
• Parks and nature nearbyF
• Air qualityC
• Drinking water qualityD
• Pesticide useD
• Neighborhood health statusB
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsD
• Radiation signalsB

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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