Assumption Parish, LA

ZIP 70390

In ZIP 70390, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: St Martin Water And Sewer Commission 1 meets every EPA legal limit; 9 contaminants are above health goals, led by lead at 9× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Basf Corp (41%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 106,693 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 70390

• Superfund sites nearbyA
• Factories and industrial sitesC to D
• Oil and gas wellsC to D
• Parks and nature nearbyC
• Air qualityD
• Drinking water qualityD
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsB to C

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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