Montbeton nouvelle Wastewater Treatment Plant, Montbeton, Occitanie

Montbeton nouvelle is an advanced wastewater treatment plant located in Montbeton, a commune in the Tarn-et-Garonne department of Occitanie, southern France. The plant serves a population of approximately 2,351 residents, classifying it as a small agglomeration under French and EU regulations. 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. Its designed capacity is 4,000 cubic meters per day, with a current discharge volume of 419.41 cubic meters per day, indicating ample reserve capacity. The treated effluent is discharged into the local watershed, which ultimately drains into the Garonne River via the Tarn River system. The Garonne flows into the Gironde estuary and then the Atlantic Ocean. The plant plays a key role in protecting the water quality of the Tarn and Garonne rivers, which support diverse aquatic life and are used for recreation and agriculture.

Montbeton nouvelle discharges treated wastewater into the local tributaries of the Tarn River, which flows into the Garonne River. The Garonne then feeds the Gironde estuary, a major ecological zone on the Atlantic coast. The watershed supports diverse aquatic species and is an important corridor for migratory fish. Advanced treatment helps minimize nutrient loading and protect downstream water quality.