Hammond North STP - Hammond, Louisiana Wastewater Treatment Plant

Hammond North STP is a municipal wastewater treatment facility located on C M Fagan Drive in Hammond, Tangipahoa Parish, Louisiana. It serves an estimated population of 48,190, placing it in the medium-agglomeration category for US inland plants. The facility is part of the regional infrastructure supporting this growing city in the southeastern part of the state. Plants of this scale in the United States typically provide secondary treatment as required by the Clean Water Act and are regulated under the National Pollutant Discharge Elimination System (NPDES) permit program. The designed capacity is reported at 1.00 million gallons per day, indicating a facility sized for the community's needs. The plant discharges treated effluent into local waterways that drain into the Lake Pontchartrain Basin, an ecologically significant estuary. This watershed supports diverse aquatic life and recreational activities, making proper treatment essential for protecting downstream water quality and the broader Gulf of Mexico ecosystem.

The plant's treated effluent flows into tributaries of the Tangipahoa River, which empties into Lake Pontchartrain, a large estuarine system connected to the Gulf of Mexico. This watershed supports diverse fish and bird populations and is an important recreational and economic resource for southeastern Louisiana. Protecting water quality in this basin is critical for maintaining the ecological health of the lake and coastal wetlands.