Overview
LESTIAC SUR GARONNE is an advanced wastewater treatment plant in Lestiac-sur-Garonne, Nouvelle-Aquitaine, France, serving about 2,035 people with a designed capacity of 2,000 m³/day.
LESTIAC SUR GARONNE is an advanced wastewater treatment plant located in Lestiac-sur-Garonne, a commune in the Gironde department of Nouvelle-Aquitaine, southwestern France. The plant serves a population of approximately 2,035 and has a designed capacity of 2,000 cubic meters per day, with a current discharge volume of 363.04 m³/day, indicating it operates well below its design capacity. As an advanced treatment facility, it goes beyond secondary treatment to remove nutrients and other pollutants, aligning with the requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC) for sensitive areas. Advanced treatment typically involves tertiary stages such as filtration, disinfection, or nutrient removal, ensuring high-quality effluent. The plant discharges treated wastewater into the Garonne River, which flows through the region and eventually reaches the Gironde estuary and the Atlantic Ocean. This water body supports diverse aquatic life and is important for local ecology and human activities such as fishing and recreation. The plant's advanced treatment helps protect the river's water quality and downstream ecosystems.
Environmental context
The plant discharges into the Garonne River, a major watercourse in southwestern France that flows into the Gironde estuary, the largest estuary in Western Europe, before reaching the Atlantic Ocean. The Garonne basin supports diverse aquatic habitats and is a critical migratory corridor for fish species such as Atlantic salmon and European eel. Advanced treatment at this plant helps reduce nutrient loads and pollutants, safeguarding the river's ecological health and the downstream estuarine environment.
Frequently asked questions
The plant is located at Chemin de l'Île, Lestiac-sur-Garonne, in the Gironde department of Nouvelle-Aquitaine, France.
The plant serves approximately 2,035 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive.
The treated effluent is discharged into the Garonne River, which flows into the Gironde estuary and eventually the Atlantic Ocean.
The plant provides advanced treatment, which includes nutrient removal and other tertiary processes, exceeding the EU directive's secondary treatment standard for sensitive areas.
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 receiving water's sensitivity. Advanced treatment indicates the Garonne River may be designated as a sensitive area.
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