Les Herbiers La Dignee Wastewater Treatment Plant, Les Herbiers, France

The Les Herbiers La Dignee wastewater treatment plant is located in the commune of Les Herbiers, within the Vendée department of Pays de la Loire, France. The facility serves a population of approximately 16,317 people, placing it in the medium agglomeration category under French and EU regulations. As a French wastewater treatment plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size (between 10,000 and 150,000 population equivalent). The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant's treated effluent is discharged into local waterways that ultimately drain into the Atlantic Ocean. The Vendée region features a network of rivers and streams that support agricultural activities and local ecosystems. Proper treatment helps protect downstream water quality and aquatic habitats.

The plant discharges into the local watershed within the Vendée region, which flows towards the Atlantic Ocean via the Sèvre Nantaise or other coastal rivers. The area supports diverse aquatic life and is part of a broader ecosystem that includes wetlands and estuaries important for migratory birds and fish species. Effective wastewater treatment is crucial to prevent nutrient enrichment and maintain water quality in these sensitive environments.