Overview
GAILLARD ANNEMASSE wastewater treatment plant serves over 106,000 people in Gaillard, Auvergne-Rhône-Alpes, France. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
The GAILLARD ANNEMASSE wastewater treatment plant is located in Gaillard, a commune in the Haute-Savoie department of the Auvergne-Rhône-Alpes region in eastern France. The plant serves a population of approximately 106,365, classifying it as a large agglomeration under EU regulations. Its proximity to the Swiss border and the city of Annemasse underscores its role in a densely populated transboundary area. As a facility serving over 100,000 people, the plant is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary biological treatment as a minimum, and tertiary treatment if the receiving waters are designated as sensitive areas. The plant's designed capacity is 1. The regulatory framework ensures that the plant meets stringent effluent standards to protect downstream water bodies. The treated effluent from the plant is discharged into the local watershed, which ultimately drains into the Rhône River via the Arve River. The Rhône flows into the Mediterranean Sea, making the plant's performance critical for the ecological health of both the Arve and Rhône rivers. The region supports diverse aquatic life and is an important corridor for migratory fish species.
Environmental context
The plant discharges into the Arve River, a tributary of the Rhône River, which flows into the Mediterranean Sea. The Arve River supports diverse aquatic ecosystems and is an important migratory corridor for fish. The Rhône basin is ecologically sensitive, with numerous wetlands and biodiversity hotspots that depend on good water quality from upstream treatment plants.
Frequently asked questions
The plant is located in Gaillard, in the Haute-Savoie department of the Auvergne-Rhône-Alpes region in eastern France, near the Swiss border.
The plant serves approximately 106,365 people, classifying it as a large agglomeration under EU regulations.
The treated effluent is discharged into the local watershed, which flows into the Arve River, a tributary of the Rhône River that ultimately reaches the Mediterranean Sea.
As a French plant serving over 100,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment and potentially tertiary treatment if the receiving waters are sensitive.
Under the EU UWWTD, plants serving more than 10,000 people in sensitive areas require tertiary treatment. For non-sensitive areas, secondary treatment is standard. The specific treatment level at GAILLARD ANNEMASSE is not publicly detailed, but the regulatory framework ensures compliance with effluent standards.
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