AX LES THERMES COMMUNALE Wastewater Treatment Plant, Savignac-les-Ormeaux, Occitanie

AX LES THERMES COMMUNALE is a wastewater treatment plant located in Savignac-les-Ormeaux, a commune in the Ariège department of Occitanie, southern France. The plant serves a population of approximately 9,091 people, placing it in the small to medium agglomeration category under EU classification. As a French facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into freshwater. The regulatory framework ensures compliance with national standards set by the French Ministry of Ecology. The plant discharges treated effluent into the local watershed, which ultimately drains into the Ariège River, a tributary of the Garonne River. The Garonne flows into the Gironde estuary and then the Atlantic Ocean. The surrounding region is mountainous, with the Pyrenees nearby, and the water bodies support diverse aquatic life and are important for local biodiversity.

The plant's treated effluent enters the local stream network, which feeds into the Ariège River. The Ariège flows northward to join the Garonne River near Toulouse. The Garonne then continues to the Gironde estuary and the Atlantic Ocean. This watershed supports diverse aquatic ecosystems, including fish species such as salmon and trout, and is an important corridor for migratory birds. The mountainous terrain of the Pyrenees influences water quality and flow patterns.