Overview
SAINT SULPICE SUR LEZE 2 is a secondary treatment plant in Montaut, Occitanie, France, serving about 2,600 people. It discharges treated wastewater into the local watershed, ultimately flowing toward the Garonne River.
SAINT SULPICE SUR LEZE 2 is a municipal wastewater treatment plant located in Montaut, a commune in the Haute-Garonne department of Occitanie, southern France. The plant serves a population of approximately 2,600, placing it in the small agglomeration category under French and EU regulations. The facility provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland plants serving between 2,000 and 10,000 population equivalents. The plant has a designed capacity of 3,857 cubic meters per day and currently treats an average daily volume of 464 cubic meters, indicating ample reserve capacity. Treated effluent from the plant is discharged into the local water network, which drains into the Léze River, a tributary of the Ariège, and eventually into the Garonne River. The Garonne flows through southwestern France to the Gironde estuary and the Atlantic Ocean. The plant plays a key role in protecting the water quality of these rivers and the downstream ecosystems.
Environmental context
The plant discharges into the Léze River, a tributary of the Ariège, which joins the Garonne River. The Garonne is a major river in southwestern France, flowing through Toulouse and Bordeaux before reaching the Gironde estuary and the Atlantic Ocean. The watershed supports diverse aquatic life and is important for regional biodiversity. The plant's secondary treatment helps reduce organic pollution and nutrient loads, protecting downstream water quality in this ecologically sensitive river system.
Frequently asked questions
The plant is located in Montaut, a commune in the Haute-Garonne department of Occitanie, southern France. Its address is Route de Lézat à Montauban, Montaut.
The plant serves approximately 2,600 people, classifying it as a small agglomeration under EU wastewater regulations.
Treated effluent is discharged into the local water network, which flows into the Léze River, a tributary of the Ariège, and eventually into the Garonne River.
The plant provides secondary treatment, which is the minimum required by the EU Urban Waste Water Treatment Directive for inland plants serving between 2,000 and 10,000 population equivalents.
As a French plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), transposed into French law. The directive mandates secondary treatment for agglomerations of this size, with compliance monitored by local authorities.
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