East Bank Plant - Elmwood, Louisiana Wastewater Treatment Facility

East Bank Plant is a municipal wastewater treatment facility located at 1221 Elmwood Park Boulevard in Elmwood, Jefferson Parish, Louisiana. It serves a population of 200,000, classifying it as a large agglomeration under US regulatory standards. The plant is situated in the Greater New Orleans metropolitan area, a region characterized by flat, low-lying terrain and a humid subtropical climate. As a large municipal facility in the United States, East Bank Plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program, established by the Clean Water Act. This regulatory framework requires permits that set effluent limits based on technology and water quality standards. For plants of this scale, secondary treatment is typically mandated, with additional nutrient removal requirements in sensitive watersheds. The plant's treated effluent discharges into the Mississippi River drainage basin, which flows into the Gulf of Mexico. The Mississippi River is a major ecological corridor supporting diverse aquatic life and migratory birds. Downstream, the river's nutrient load contributes to the Gulf of Mexico hypoxic zone, making nutrient management an important consideration for regional wastewater treatment.

East Bank Plant discharges into the Mississippi River basin, which drains into the Gulf of Mexico. The Mississippi River is a critical waterway for fish spawning and migratory bird habitats. The Gulf of Mexico receives the river's outflow, where nutrient pollution from upstream sources contributes to seasonal hypoxia, affecting marine ecosystems and fisheries.