Overview
PLEUMELEUC wastewater treatment plant in Pleumeleuc, Bretagne, France, serves 3,300 people with advanced treatment. It discharges 588.71 m³/day and has a designed capacity of 7,500 m³/day.
PLEUMELEUC is a wastewater treatment plant located in the commune of Pleumeleuc, within the Ille-et-Vilaine department of Bretagne, France. The facility serves a population of approximately 3,300 residents and is part of the municipal wastewater infrastructure for the Rennes metropolitan area. The plant is situated inland, more than 10 km from the coast, but within 50 km of the English Channel. The plant employs advanced treatment processes, which go 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 7,500 m³/day and a current discharge volume of 588.71 m³/day, the facility operates well below its capacity, indicating room for future growth. The advanced treatment ensures high-quality effluent suitable for sensitive receiving environments. The treated wastewater is discharged into local watercourses that ultimately drain into the English Channel via the Rance or Vilaine river basins. The plant plays a key role in protecting the region's water quality, supporting aquatic ecosystems, and maintaining the ecological health of downstream environments, including estuaries and coastal zones.
Environmental context
The plant discharges into local streams that flow into the Vilaine River or the Rance River, both of which drain into the English Channel. The downstream environment includes estuaries and coastal habitats that support diverse aquatic life, including migratory fish species. The advanced treatment helps reduce nutrient loads, protecting against eutrophication in sensitive coastal waters.
Frequently asked questions
The PLEUMELEUC plant is located at Les Morlais, Pleumeleuc, in the Ille-et-Vilaine department of Bretagne, France. It serves the commune of Pleumeleuc and is part of the Rennes metropolitan area.
The plant serves approximately 3,300 residents, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive.
The plant uses advanced treatment processes, which provide a higher level of purification than secondary treatment. This includes removal of nutrients like nitrogen and phosphorus to protect sensitive downstream environments.
The plant discharges into local watercourses that flow into the Vilaine or Rance rivers, which drain into the English Channel. Its advanced treatment helps maintain water quality in these rivers and their estuaries.
Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent (PE) between 2,000 and 10,000 require secondary treatment. PLEUMELEUC, serving 3,300 people, meets this requirement and goes further with advanced treatment, which is often mandated in sensitive areas.
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