Overview
RENNES wastewater treatment plant serves the city of Rennes in Brittany, France, with a population equivalent of 254,200. It operates under the EU Urban Waste Water Treatment Directive.
The RENNES wastewater treatment plant is a major municipal facility serving the city of Rennes, located in the Brittany region of northwestern France. With a population served of 254,200, it is classified as a large agglomeration under EU regulations. The plant is situated on the banks of the Vilaine River, which flows through the city and ultimately reaches the Atlantic Ocean. As a large agglomeration, the plant is expected to provide at least secondary treatment under the EU Urban Waste Water Treatment Directive (91/271/EEC), with more stringent tertiary treatment required if the receiving waters are designated as sensitive areas. The regulatory framework ensures compliance with discharge standards to protect the environment. The treated effluent is discharged into the Vilaine River, which flows into the Bay of Biscay via the Vilaine estuary. The river supports diverse aquatic life and is an important ecological corridor. The plant plays a critical role in maintaining water quality in the Vilaine basin and protecting downstream coastal ecosystems.
Environmental context
The RENNES plant discharges into the Vilaine River, which flows through Brittany and empties into the Bay of Biscay (Atlantic Ocean). The Vilaine estuary is an ecologically sensitive area that supports migratory fish species and diverse wetland habitats. The plant's operations are crucial for maintaining water quality in this river basin, which is subject to nutrient pollution pressures from agriculture and urban runoff.
Frequently asked questions
The RENNES plant is located in Rennes, Brittany, France, at Chemin de Halage, La Prévalaye, in the western part of the city.
The plant serves a population equivalent of 254,200, classifying it as a large agglomeration under EU regulations.
Treated wastewater from the RENNES plant is discharged into the Vilaine River, which flows through Rennes and eventually reaches the Atlantic Ocean via the Vilaine estuary.
As a French plant serving over 150,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment and potentially tertiary treatment for sensitive areas.
Under the EU Urban Waste Water Treatment Directive, plants serving over 150,000 people are required to provide at least secondary treatment. If the receiving water body is in a sensitive area, tertiary treatment for nutrient removal is also required.
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