Overview
St Thonan Prat Ledan is an advanced wastewater treatment plant serving Saint-Thonan, Bretagne, France. It treats wastewater for approximately 2,483 people with a designed capacity of 4,000 m³/day.
St Thonan Prat Ledan is an advanced wastewater treatment plant located in Prat Ledan, Saint-Thonan, in the Bretagne region of France. The plant serves a population of approximately 2,483 people and has a designed capacity of 4,000 m³/day, with an average discharge volume of 442.96 m³/day. As an advanced treatment facility, it goes beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment levels for agglomerations of this size, particularly in sensitive areas like Bretagne. The treated effluent is discharged into the local watershed, which ultimately drains into the Atlantic Ocean via the coastal rivers of Finistère. The plant plays a key role in protecting the region's water quality and supporting the ecological health of downstream environments.
Environmental context
The plant discharges into the local watershed in Bretagne, which flows into the Atlantic Ocean via the coastal rivers of Finistère. This region is ecologically sensitive, supporting diverse aquatic life and important migratory corridors. Advanced treatment helps minimize nutrient loading and protects downstream marine habitats.
Frequently asked questions
St Thonan Prat Ledan is located at Prat Ledan, Saint-Thonan, in the Finistère department of Bretagne, France.
The plant serves a population equivalent of approximately 2,483 people.
The treated effluent is discharged into the local watershed in Bretagne, which ultimately flows into the Atlantic Ocean via coastal rivers.
The plant provides advanced treatment, which includes nutrient removal beyond secondary treatment, in compliance with EU standards.
Under the EU UWWTD, agglomerations of this size in sensitive areas require advanced treatment. The plant's advanced treatment level meets these requirements, protecting the sensitive coastal environment of Bretagne.
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