Overview
Saint-Mars-la-Brière wastewater treatment plant in Pays de la Loire, France, serves 2,420 people with advanced treatment. It discharges 431.72 m³/day and has a designed capacity of 1,950 m³/day.
The Saint-Mars-la-Brière wastewater treatment plant is located in the commune of Saint-Mars-la-Brière, within the Sarthe department of the Pays de la Loire region in northwestern France. It serves a population of approximately 2,420 residents, classifying it as a small agglomeration under French and EU regulations. 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 1,950 m³/day and an average daily discharge of 431.72 m³, the facility operates well within its capacity, ensuring effective treatment of local wastewater. The treated effluent is discharged into a local watercourse that ultimately drains into the Sarthe River, a tributary of the Loire River. The Loire basin is the largest river basin in France and supports diverse aquatic ecosystems. The plant's advanced treatment helps protect downstream water quality in this ecologically significant watershed.
Environmental context
The plant discharges into a local stream that flows into the Sarthe River, which joins the Maine River near Angers before reaching the Loire River. The Loire River empties into the Atlantic Ocean at the Loire Estuary. The Loire basin is home to numerous fish species, including Atlantic salmon and European eel, and supports rich riparian habitats. Advanced treatment at this plant helps reduce nutrient loading and protects the ecological health of the downstream river system.
Frequently asked questions
The plant is located at Chemin du Moulin du Bourray, Saint-Mars-la-Brière, in the Sarthe department of the Pays de la Loire region, France.
The plant serves approximately 2,420 residents, classifying it as a small agglomeration under EU classification.
The treated effluent is discharged into a local watercourse that flows into the Sarthe River, part of the Loire River basin, ultimately reaching the Atlantic Ocean.
The plant provides advanced treatment, which exceeds the secondary treatment standard required by the EU Urban Waste Water Treatment Directive 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, which mandates appropriate treatment based on population and receiving water sensitivity.
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