Overview
SEILH AUSSONNELLE wastewater treatment plant serves Seilh in Occitanie, France, with a population equivalent of 58,976. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scal
SEILH AUSSONNELLE is a wastewater treatment plant located in Seilh, a commune in the Haute-Garonne department of Occitanie, southern France. The plant serves a population equivalent of 58,976, classifying it as a medium-to-large agglomeration under European Union regulations. As a French facility, the plant operates within the framework of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations between 10,000 and 150,000 population equivalent. The directive also mandates more stringent treatment if the receiving waters are designated as sensitive areas. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Garonne River. The Garonne flows through Toulouse and into the Gironde estuary, reaching the Atlantic Ocean. This water body supports diverse aquatic life and is an important ecological corridor in the region.
Environmental context
The plant discharges into the Garonne River basin, which flows through the Occitanie region and into the Gironde estuary before reaching the Atlantic Ocean. The Garonne supports diverse aquatic species and is a critical migratory route for fish such as Atlantic salmon and European eel. Downstream ecosystems depend on maintained water quality from upstream treatment facilities.
Frequently asked questions
SEILH AUSSONNELLE is located in Seilh, a commune in the Haute-Garonne department of Occitanie, southern France, near Toulouse.
The plant serves a population equivalent of 58,976, classifying it as a medium-to-large agglomeration under EU regulations.
The treated effluent is discharged into the local watershed, which drains into the Garonne River, eventually reaching the Atlantic Ocean via the Gironde estuary.
As a French plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size and potentially tertiary treatment if the receiving waters are sensitive.
Under the EU Urban Waste Water Treatment Directive, plants serving between 10,000 and 150,000 population equivalent typically require secondary treatment, with tertiary treatment if discharging into sensitive areas like the Garonne River.
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