Overview
AILLANT SUR THOLON wastewater treatment plant in Montholon, France, serves 2,456 people with advanced treatment. It discharges 438.15 cubic meters per day and has a designed capacity of 3,000 cubic meters per day.
The AILLANT SUR THOLON wastewater treatment plant is located in Montholon, in the Bourgogne-Franche-Comté region of France. It serves a population of 2,456, classifying it as a small agglomeration under French and EU regulations. The plant is situated inland, away from coastal areas. 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 3,000 cubic meters per day and an actual discharge volume of 438.15 cubic meters per day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into the local watershed, which ultimately drains into the Tholon River, a tributary of the Yonne River, then the Seine River, and finally the English Channel. The plant plays a key role in protecting the water quality of these water bodies, supporting aquatic life and downstream ecosystems.
Environmental context
The plant discharges into the Tholon River, which flows into the Yonne River, a major tributary of the Seine River. The Seine River basin is ecologically significant, supporting diverse aquatic species and providing water for agriculture and urban areas downstream. The advanced treatment helps reduce nutrient loads, protecting the river from eutrophication and maintaining water quality for sensitive habitats.
Frequently asked questions
The plant is located at 9, Le Bourg Nord, Aillant-sur-Tholon, Montholon, in the Yonne department of Bourgogne-Franche-Comté, France.
The plant serves a population of 2,456 people, classifying it as a small agglomeration under EU regulations.
The treated effluent is discharged into the local watershed, which flows into the Tholon River, a tributary of the Yonne River, and eventually into the Seine River and the English Channel.
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 serving fewer than 10,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment. The plant's advanced treatment goes beyond this requirement, ensuring high-quality effluent for the sensitive Seine River basin.
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