Overview
CROZON Lostmarc h is a wastewater treatment plant in Crozon, Bretagne, France, serving approximately 14,500 people. It is located near the coast in the Finistère department.
CROZON Lostmarc h is a wastewater treatment plant situated in Crozon, a commune in the Finistère department of Bretagne, France. The plant serves a population of approximately 14,500, placing it within the medium agglomeration category under French regulations. Its coastal location in the Crozon Peninsula, a popular tourist area, underscores the importance of effective wastewater management for local environmental quality. As a French facility, the plant operates under the national transposition of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations serving between 10,000 and 150,000 people, the directive requires secondary treatment as a minimum, with more stringent tertiary treatment in sensitive areas. Given the plant's proximity to the coast, it likely falls under sensitive area designation, necessitating advanced treatment to protect marine waters. The plant's discharge ultimately reaches the Atlantic Ocean via the local coastal hydrology. The Crozon Peninsula is known for its rugged coastline and diverse marine ecosystems, including kelp forests and important fish nursery habitats. Effective treatment is critical to prevent nutrient enrichment and protect water quality in the Iroise Sea, a biologically rich area supporting seabirds, seals, and commercial fisheries.
Environmental context
The plant discharges into the coastal waters of the Crozon Peninsula, which drain into the Iroise Sea, part of the Atlantic Ocean. This area supports ecologically sensitive marine habitats, including seagrass beds and rocky reefs that host diverse aquatic life. Nutrient loading from wastewater could impact local water quality and marine biodiversity, making advanced treatment essential for preserving the region's ecological integrity.
Frequently asked questions
The plant is located in Crozon, a commune in the Finistère department of Bretagne, France, near the coastal path Sentier Côtier in the Kerabars area.
The plant serves approximately 14,500 people, classifying it as a medium-sized agglomeration under French and EU wastewater regulations.
The plant discharges treated wastewater into the local coastal waters, which flow into the Iroise Sea and ultimately the Atlantic Ocean. The exact discharge point is managed to minimize environmental impact.
As a French plant serving over 10,000 people, it falls under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum. Due to its coastal location in a sensitive area, tertiary treatment for nutrient removal is likely required.
For agglomerations of this size in coastal sensitive areas, French plants typically employ biological treatment with nutrient removal (nitrogen and phosphorus) to meet stringent discharge standards under the EU directive.
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