HCUALONG BEACH_PASS CHRISTIAN Wastewater Treatment Plant, Pass Christian, Mississippi

HCUALONG BEACH_PASS CHRISTIAN is a municipal wastewater treatment plant located on Fleitas Avenue in Pass Christian, Harrison County, Mississippi. The plant serves a population of about 30,376 residents in this coastal community along the Gulf of Mexico. 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 population of this scale, secondary treatment is typically required, and the plant's designed capacity of 1.00 million gallons per day suggests it is sized for the community's needs. The plant's treated effluent is discharged into local waterways that ultimately drain into the Mississippi Sound and the Gulf of Mexico. This coastal discharge location makes proper treatment essential to protect marine ecosystems, including oyster reefs and fisheries that are economically and ecologically significant to the region.

The plant discharges into the Mississippi Sound, a shallow, nutrient-rich estuary along the Gulf Coast. This water body supports diverse aquatic life, including oysters, shrimp, and finfish, and is an important migratory corridor for birds. The Sound connects to the Gulf of Mexico, which is a major marine ecosystem. Nutrient loading from wastewater can contribute to algal blooms and hypoxia, making effective treatment critical for maintaining water quality and habitat health.