LA BAULE Livery 2 Wastewater Treatment Plant, Batz-sur-Mer, France

LA BAULE Livery 2 is a municipal wastewater treatment plant located in Batz-sur-Mer, within the Pays de la Loire region of western France. The facility serves a population equivalent of 95,150, classifying it as a large agglomeration under EU regulations. Its coastal location near the Bay of Biscay places it in a sensitive environmental zone where advanced treatment is typically required. As a French plant serving over 10,000 people, LA BAULE Livery 2 is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary biological treatment as a minimum. For agglomerations in sensitive areas, such as coastal zones, tertiary treatment (nutrient removal) is often required to protect receiving waters from eutrophication. The plant's designed capacity is 1. The treated effluent from LA BAULE Livery 2 discharges into the Bay of Quiberon, part of the Atlantic Ocean. This coastal area supports diverse marine life, including important fisheries and migratory bird populations. The plant's performance is critical to maintaining water quality in the bay, which is also a popular tourist destination. Regional drainage from the Loire-Atlantique department ultimately flows into the Atlantic, making effective wastewater treatment essential for coastal ecosystem health.

The plant discharges into the Bay of Quiberon, a coastal inlet of the Atlantic Ocean in southern Brittany. This marine environment supports diverse ecosystems, including seagrass beds and shellfish beds, which are sensitive to nutrient pollution. The bay is part of a larger coastal zone that provides habitat for migratory birds and marine species. Effective treatment at LA BAULE Livery 2 helps prevent eutrophication and protects water quality for both ecological and recreational uses.