ROUFFIAC TOLOSAN 2 Wastewater Treatment Plant, Rouffiac-Tolosan, Occitanie

ROUFFIAC TOLOSAN 2 is an advanced wastewater treatment plant located in Rouffiac-Tolosan, a commune in the Haute-Garonne department of Occitanie, southern France. The plant serves a population of about 2,425 and has a designed capacity of 3,500 cubic meters per day, with a current discharge volume of 432.62 cubic meters per day. As an advanced treatment facility, it goes beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. The plant operates under France's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for agglomerations of this size to protect sensitive water bodies. The treated effluent is discharged into local waterways that eventually flow into the Garonne River, a major river in southwestern France. The Garonne drains into the Gironde estuary and the Atlantic Ocean. The plant plays a key role in protecting the local watershed and downstream aquatic ecosystems from nutrient pollution.

The plant discharges into the local tributary network of the Garonne River, which flows through Toulouse and into the Gironde estuary before reaching the Atlantic Ocean. The Garonne basin supports diverse aquatic life, including migratory fish species such as Atlantic salmon and European eel. Advanced treatment at this plant helps reduce nutrient loading, protecting water quality in the downstream estuary and coastal zone.