Overview
AUNEAU wastewater treatment plant in Auneau-Bleury-Saint-Symphorien, Centre-Val de Loire, France, serves about 4,600 people with advanced treatment and a designed capacity of 5,330 m³/day.
The AUNEAU wastewater treatment plant is located in Auneau-Bleury-Saint-Symphorien, a commune in the Eure-et-Loir department of the Centre-Val de Loire region, France. The plant serves a population of approximately 4,600 and is part of the municipal wastewater infrastructure for the area. The plant provides advanced treatment, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 5,330 m³/day and a current discharge volume of about 828 m³/day, the facility operates well within its capacity. Advanced treatment typically includes nutrient removal to protect sensitive water bodies. The treated effluent is discharged into local watercourses that ultimately drain into the Seine River basin, which flows into the English Channel. The plant plays a key role in protecting the regional aquatic environment and downstream ecosystems, including the Seine estuary and marine areas.
Environmental context
The plant discharges into the local watershed, which is part of the Seine River basin. The Seine flows through Paris and into the English Channel, supporting diverse aquatic life and important migratory fish species. The advanced treatment helps reduce nutrient loads, protecting downstream water quality and preventing eutrophication in the estuary and coastal zone.
Frequently asked questions
The AUNEAU plant is located on Rue Saint-Rémy in Auneau, part of the commune Auneau-Bleury-Saint-Symphorien, in the Eure-et-Loir department of the Centre-Val de Loire region, France.
The plant serves approximately 4,641 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive.
The treated effluent is discharged into local watercourses that are part of the Seine River basin, ultimately reaching the English Channel.
The plant provides advanced treatment, which includes nutrient removal beyond the secondary treatment standard. This is typical for plants in sensitive areas under French regulations.
Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations of this size (under 10,000 population equivalent) require appropriate treatment. The plant's advanced treatment exceeds the minimum secondary treatment requirement, reflecting France's commitment to protecting water quality.
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