ST GEORGES D OLERON bourg, Saint-Denis-d'Oléron

Overview

ST GEORGES D OLERON bourg is a wastewater treatment plant serving Saint-Denis-d'Oléron, France. It treats wastewater from approximately 13,905 people in the Nouvelle-Aquitaine region.

ST GEORGES D OLERON bourg is a municipal wastewater treatment plant located in Saint-Denis-d'Oléron, on the Île d'Oléron in the Nouvelle-Aquitaine region of southwestern France. The plant serves a population of approximately 13,905, placing it in the medium agglomeration category under French and EU regulations. As a French facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size discharging into coastal waters. The treated effluent is discharged into the local watershed, which ultimately drains into the Bay of Biscay (Atlantic Ocean). The Île d'Oléron is an ecologically sensitive coastal area with significant marine biodiversity, including oyster farming and migratory bird habitats. The plant plays a key role in protecting these coastal waters from nutrient pollution.

Environmental context

The plant discharges into the local watershed on the Île d'Oléron, which drains into the Pertuis d'Antioche strait and then the Bay of Biscay (Atlantic Ocean). This coastal environment supports diverse marine life, including oyster beds and seagrass meadows, and is an important area for migratory birds. Proper wastewater treatment is critical to prevent eutrophication and protect the region's ecological and economic resources.

Frequently asked questions

The plant is located at D 734, Saint-Denis-d'Oléron, on the Île d'Oléron in the Nouvelle-Aquitaine region of southwestern France.

The plant serves approximately 13,905 people, corresponding to a medium-sized agglomeration under EU classification.

The treated effluent is discharged into the local watershed on the Île d'Oléron, which flows into the Pertuis d'Antioche and then the Bay of Biscay (Atlantic Ocean).

As a French plant, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary treatment for agglomerations over 10,000 population equivalent discharging into coastal waters.

For medium agglomerations (10,000-150,000 PE) in coastal areas, the EU UWWTD requires secondary treatment (biological treatment) as a minimum, with tertiary treatment if the receiving waters are sensitive to eutrophication.