TONNERRE nouvelle Wastewater Treatment Plant, Tonnerre, Bourgogne-Franche-Comté

TONNERRE nouvelle is an advanced wastewater treatment plant located in Tonnerre, within the Bourgogne-Franche-Comté region of France. The facility serves a population of approximately 4,597 residents and is designed to handle a capacity of 9,100 cubic meters per day, with an actual discharge volume of 820.10 cubic meters per day. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. As a French facility, it operates under the European Union's Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment levels based on the size of the agglomeration and the sensitivity of the receiving environment. For a plant serving around 4,600 people, advanced treatment is consistent with requirements for sensitive areas. The treated effluent is discharged into the local watershed, which ultimately drains into the Seine River basin and flows toward the English Channel. The plant plays a key role in protecting the water quality of the Armançon River and downstream ecosystems, supporting aquatic life and maintaining the ecological balance of the region.

The plant discharges into the Armançon River, a tributary of the Yonne River, which flows into the Seine River and eventually reaches the English Channel. The local watershed supports diverse aquatic habitats and is important for migratory fish species. The advanced treatment helps reduce nutrient loading, protecting downstream water quality and preventing eutrophication in sensitive coastal zones.