Ker Forest Du Wastewater Treatment Plant, Sainte-Marine, Bretagne

Ker Forest Du is a wastewater treatment plant located in Sainte-Marine, a coastal village in the Finistère department of Bretagne, France. The plant serves a population of approximately 11,210 people, placing it in the medium agglomeration category under French and EU regulations. Its location near the coast and the Odet River estuary influences its operational and environmental context. 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. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day), indicating it is sized to handle the local population's wastewater. Compliance with EU standards is expected for a plant of this scale. The plant's treated effluent is discharged into the local watershed, which drains into the Odet River and ultimately into the Bay of Biscay (Atlantic Ocean). This coastal discharge area supports diverse marine life and is part of a region known for its tourism and fishing industries. The plant plays a key role in protecting the water quality of the Odet estuary and downstream coastal waters.

Ker Forest Du discharges into the Odet River, which flows through the Finistère region and empties into the Bay of Biscay, part of the Atlantic Ocean. The downstream environment includes the Odet estuary, a sensitive coastal ecosystem that supports migratory fish species and marine biodiversity. The plant's location within 50 km of the coast means its effluent can influence nearshore water quality, particularly during low-flow periods. Effective treatment is essential to protect the estuary's ecological health and the recreational and economic value of the coastal area.