Overview
Port-Saint-Père wastewater treatment plant in Pays de la Loire, France, serves 2,167 people with advanced treatment. It discharges 386.59 m³/day and has a designed capacity of 3,500 m³/day.
The Port-Saint-Père wastewater treatment plant is located in the commune of Port-Saint-Père, within the Nantes metropolitan area in the Pays de la Loire region of western France. The facility serves a population of 2,167 and operates with advanced treatment processes, reflecting the high environmental standards required in the region. As a plant in France, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size. The advanced treatment level indicates that the plant likely employs nutrient removal or other tertiary processes to protect sensitive receiving waters. The designed capacity of 3,500 m³/day provides headroom for future growth. The treated effluent is discharged into the local watershed, which ultimately drains into the Loire River estuary and the Bay of Biscay. The plant plays a key role in protecting the Loire-Atlantique region's aquatic ecosystems and supports the ecological health of downstream wetlands and coastal areas.
Environmental context
The plant discharges into the Loire River basin, which flows through the Pays de la Loire region and empties into the Bay of Biscay on the Atlantic coast. The downstream environment includes ecologically sensitive estuarine habitats that support diverse aquatic life, including migratory fish species. The advanced treatment helps reduce nutrient loading to the Loire estuary, mitigating eutrophication risks in coastal waters.
Frequently asked questions
The plant is located in Port-Saint-Père, a commune in the Loire-Atlantique department of the Pays de la Loire region, western France, near the city of Nantes.
The plant serves a population of 2,167 people, making it a small agglomeration under the EU Urban Waste Water Treatment Directive.
The treated effluent is discharged into the local watershed, which flows into the Loire River and eventually reaches the Bay of Biscay on the Atlantic coast.
The plant provides advanced treatment, which goes beyond secondary treatment to remove nutrients and other pollutants, protecting sensitive downstream waters.
As a French plant serving fewer than 10,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment based on the sensitivity of the receiving waters.
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