Milin ar Lann Wastewater Treatment Plant, Landéda, Bretagne, France

Milin ar Lann is a wastewater treatment plant located in Landéda, Finistère, in the Bretagne region of France. It serves a population of approximately 9,800 people and has a designed capacity of 1.00 m³/day. The plant is situated near the coast, within 50 km of the shoreline, and its operations are subject to French and European regulations. As a facility serving a medium-sized agglomeration, Milin ar Lann is expected to comply with the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for populations between 2,000 and 10,000 in sensitive areas. Typical French plants of this scale employ biological treatment to meet national standards. The plant discharges treated wastewater into the local watershed, which ultimately drains into the Atlantic Ocean via the Aber Wrac'h estuary. This coastal environment supports diverse marine life and is ecologically sensitive. The plant plays a key role in protecting the water quality of the estuary and adjacent coastal waters from nutrient pollution.

Milin ar Lann discharges into the Aber Wrac'h river, which flows into the Atlantic Ocean along the rugged coast of Finistère. This estuary is part of a dynamic coastal ecosystem that supports migratory fish, shellfish, and seabirds. The region's high rainfall and agricultural runoff make nutrient management critical to prevent eutrophication in the coastal zone.