Tangipahoa Parish, LA

ZIP 70454

In ZIP 70454, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Pontchatoula Water System has 1 contaminant at or over an EPA legal limit; 10 contaminants are above health goals, led by di(2-ethylhexyl) phthalate at 133× California’s Public Health Goal.
• Nearest Superfund site: Delatte Metals, 5.9 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Evonik Corp (46%), 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 70454

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

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

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