Overview
Laplace Plant serves St. John the Baptist Parish, Louisiana, treating wastewater for approximately 73,000 residents. The facility operates under the U. S. Clean Water Act's NPDES program.
Laplace Plant is a municipal wastewater treatment facility located in St. John the Baptist Parish, Louisiana, United States. It serves a population of approximately 73,000 people, placing it in the medium-to-large agglomeration category for U. S. wastewater infrastructure. As a U. S. facility, Laplace Plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program, established by the Clean Water Act. This regulatory framework requires permits for discharges into surface waters and sets effluent limits based on technology and water quality standards. The plant's designed capacity is 1. The plant's treated effluent is discharged into the Mississippi River watershed, which flows into the Gulf of Mexico. This region supports diverse aquatic life and is part of a larger estuarine ecosystem that includes important fisheries and migratory bird habitats. The plant's discharge contributes to the overall water quality management of the lower Mississippi River basin.
Environmental context
Laplace Plant discharges into the Mississippi River, which flows through Louisiana and empties into the Gulf of Mexico. The lower Mississippi River and its delta support a rich ecosystem, including wetlands that provide critical habitat for fish, birds, and other wildlife. The Gulf of Mexico receives nutrient loads from the river, contributing to seasonal hypoxic zones, making nutrient management important for downstream water quality.
Frequently asked questions
Laplace Plant is located in St. John the Baptist Parish, Louisiana, United States, near the Mississippi River.
Laplace Plant serves approximately 73,000 people in the St. John the Baptist Parish area.
The plant discharges treated effluent into the Mississippi River, which flows into the Gulf of Mexico.
Laplace Plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which regulates wastewater discharges to surface waters under the Clean Water Act.
U. S. plants serving populations around 73,000 typically employ secondary treatment as a minimum, with some incorporating advanced treatment to meet nutrient limits or water quality standards.
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