Overview
Questembert Le Maguero is an advanced wastewater treatment plant in Questembert, Brittany, France, serving about 5,510 people. It has a designed capacity of 7,000 m³/day and discharges treated water near the coast.
Questembert Le Maguero is a wastewater treatment plant located in Questembert, in the Brittany region of northwestern France. The facility serves a population of approximately 5,510 people, placing it in the small-to-medium agglomeration category under French and EU regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 7,000 m³/day and an average discharge volume of about 983 m³/day, the plant operates well within its capacity. As a coastal facility within 10 km of the Atlantic coast, the advanced treatment level helps protect sensitive marine environments. The treated effluent is discharged into local watercourses that drain into the Atlantic Ocean. The plant plays a key role in safeguarding the water quality of the Gulf of Morbihan and adjacent coastal areas, which support diverse marine life and are important for tourism and fisheries. Its advanced treatment ensures compliance with stringent French and European standards for nutrient removal and pathogen reduction.
Environmental context
The plant discharges into local streams that flow into the Gulf of Morbihan, a semi-enclosed marine inlet on the Atlantic coast of Brittany. This area is ecologically sensitive, supporting seagrass beds, shellfish beds, and migratory bird populations. The advanced treatment level helps minimize nutrient loading and protects the gulf's water quality, which is vital for local aquaculture and tourism.
Frequently asked questions
The plant is located in Questembert, in the Morbihan department of Brittany, northwestern France. Its address is near Rue Gutenberg in the Le Pondigo industrial area.
The plant serves approximately 5,510 people, classifying it as a small-to-medium agglomeration under EU wastewater regulations.
The treated effluent is discharged into local watercourses that flow into the Gulf of Morbihan and eventually the Atlantic Ocean. The plant's advanced treatment ensures minimal environmental impact on these sensitive coastal waters.
The plant provides advanced treatment, which includes nutrient removal beyond secondary treatment. This exceeds the EU Urban Waste Water Treatment Directive's minimum requirement for agglomerations of this size.
As a French plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), transposed into French law. The directive mandates secondary treatment for agglomerations above 2,000 population equivalent, and advanced treatment in sensitive areas like coastal zones.
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