Overview
ROSCOFF Keroulaouen wastewater treatment plant serves the port town of Roscoff in Brittany, France. It is located within 50 km of the coast and discharges into the English Channel.
The ROSCOFF Keroulaouen wastewater treatment plant is located in Roscoff, a coastal town in the Finistère department of Brittany, France. The plant serves a population of approximately 6,480 residents and is situated near the Port de Bloscon, a major maritime hub for ferry traffic to Ireland and the UK. As a facility in a coastal region, it plays a key role in protecting the local marine environment. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent (PE) between 2,000 and 10,000 are required to have appropriate treatment, typically secondary treatment, unless discharging into sensitive areas. For a plant serving around 6,480 people, secondary treatment is the standard expectation. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day or similar unit), indicating it is sized for the local population. The plant's treated effluent ultimately reaches the English Channel via local coastal waters. The surrounding area includes the Bay of Morlaix and the Iroise Sea, which are ecologically important for marine biodiversity, including seabird colonies and shellfish beds. Proper wastewater treatment is essential to prevent nutrient pollution and protect these sensitive coastal ecosystems.
Environmental context
The plant discharges into the English Channel near the coast of Roscoff, within the broader Bay of Morlaix and Iroise Sea region. This area supports diverse marine life, including kelp forests, fish nurseries, and migratory bird populations. Nutrient loading from wastewater could contribute to eutrophication in coastal waters, making effective treatment critical for maintaining water quality and ecosystem health.
Frequently asked questions
The plant is located in Roscoff, a coastal town in the Finistère department of Brittany, France, near the Port de Bloscon.
The plant serves approximately 6,480 residents of Roscoff and surrounding areas.
The plant discharges treated effluent into coastal waters that flow into the English Channel, near the Bay of Morlaix.
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.
Under the EU UWWTD, agglomerations between 2,000 and 10,000 PE are generally required to have secondary treatment, unless discharging into sensitive areas where tertiary treatment may be needed.
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