Overview
Pont de Larn Mazamet wastewater treatment plant serves 10,600 people in Pont-de-Larn, Occitanie, France. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
Pont de Larn Mazamet is a municipal wastewater treatment plant located in Pont-de-Larn, a commune in the Tarn department of the Occitanie region in southern France. The plant serves a population of approximately 10,600 people, classifying it as a medium-sized agglomeration under European Union regulations. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent between 2,000 and 15,000 are required to provide secondary treatment. This plant, serving 10,600 people, falls within this category and is expected to meet the directive's standards for biological treatment and nutrient removal where necessary. The plant discharges treated wastewater into the local watershed, which ultimately drains into the Tarn River, a major tributary of the Garonne River. 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 River and downstream ecosystems.
Environmental context
The plant's treated effluent enters the local watercourse, which feeds into the Tarn River. The Tarn River supports diverse aquatic life and is an important ecological corridor in the region. Downstream, the Garonne River and Gironde estuary provide critical habitats for migratory fish species and estuarine ecosystems. The plant's treatment performance directly influences water quality in these sensitive environments.
Frequently asked questions
The plant is located in Pont-de-Larn, a commune in the Tarn department of the Occitanie region in southern France. Its address is Chemin des Berges, Hauterive, Pont-de-l'Arn, Pont-de-Larn.
The plant serves a population of approximately 10,600 people, classifying it as a medium-sized agglomeration under EU regulations.
The plant discharges treated effluent into the local watercourse, which flows into the Tarn River. The Tarn River is a tributary of the Garonne River, which eventually reaches the Atlantic Ocean via the Gironde estuary.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations with a population equivalent between 2,000 and 15,000. French national regulations implement this directive.
For medium-sized agglomerations in France, secondary treatment (biological treatment) is standard. In sensitive areas, additional nutrient removal may be required to protect receiving water bodies.
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