PORNIC Les Salettes Wastewater Treatment Plant, Pornic, France

PORNIC Les Salettes is a wastewater treatment plant located in Pornic, a coastal town in the Pays de la Loire region of western France. The plant serves an estimated population of 28,433, placing it in the medium agglomeration category under EU classification. Its location near the Atlantic coast means treated effluent likely discharges into coastal waters, requiring compliance with stringent environmental standards. As a French plant serving a population between 10,000 and 150,000, it is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment as a minimum. For coastal discharges, the directive may require more advanced treatment if the receiving waters are considered sensitive. The plant's designed capacity is reported as 1.00, though the unit is unspecified, indicating it is sized to handle the local population's wastewater load. Given its proximity to the coast (within 50 km), treated wastewater likely flows into the Bay of Biscay via local rivers or direct marine outfall. This coastal environment supports diverse marine life and is important for regional tourism and fisheries. The plant plays a key role in protecting water quality in the area, preventing nutrient pollution and safeguarding coastal ecosystems.

The plant is situated in the Loire-Atlantique department, near the Atlantic coast. Treated wastewater likely discharges into the Bay of Biscay, either directly or via small coastal rivers. The coastal waters are ecologically sensitive, supporting diverse marine habitats and serving as nursery grounds for fish. Nutrient inputs from wastewater must be carefully managed to prevent eutrophication and algal blooms, which can harm local biodiversity and affect tourism and fishing industries.