Plaquemines Parish, LA

ZIP 70050

In ZIP 70050, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Port Sulphur Water District meets every EPA legal limit; 16 contaminants are above health goals, led by pfos at 3.8× 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: Phillips 66 - Alliance Refinery (98%), mostly benzene.
• Fine particles (PM2.5) average 6.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 4,556 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 70050

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsD
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityF
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA

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

Loading the full report, with every source…