HCUA East Biloxi POTW - Biloxi, Mississippi Wastewater Treatment Plant

HCUA East Biloxi POTW is a municipal wastewater treatment plant located in Biloxi, Mississippi, United States. It serves a population of around 22,709 residents in the eastern part of the city, operating as part of the Harrison County utility infrastructure. The plant is situated near the Gulf Coast, within 50 kilometers of the coastline. As a US facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Mississippi Department of Environmental Quality. For a plant serving a medium-sized agglomeration of this scale, secondary treatment is typically required, with additional nutrient removal standards in sensitive coastal watersheds. The plant's treated effluent is discharged into local streams that flow into the Mississippi Sound and ultimately the Gulf of Mexico. This coastal discharge area supports diverse marine life, including shellfish beds and estuarine habitats that are ecologically sensitive to nutrient loading and pollutant inputs.

The plant discharges into the Biloxi Bay watershed, which drains into the Mississippi Sound and then the Gulf of Mexico. This coastal environment supports important fisheries, including shrimp, oysters, and finfish, and provides critical habitat for migratory birds. The proximity to the Gulf makes nutrient management a key concern to prevent algal blooms and hypoxia in the Sound.