CREVIN Wastewater Treatment Plant, Laillé, Brittany, France

CREVIN is an advanced wastewater treatment plant located in Laillé, in the Brittany region of France. The facility serves a population of approximately 2,440 people and is part of the municipal wastewater infrastructure for the area. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 3,400 m³/day and an actual discharge volume of 435.29 m³/day, the plant operates well within its capacity. As a French facility, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment levels based on receiving water sensitivity. The treated effluent is discharged into local waterways that ultimately drain into the Atlantic Ocean via the Vilaine River basin. The plant's advanced treatment helps protect downstream aquatic ecosystems and supports water quality in the region.

The plant discharges into the Vilaine River basin, which flows into the Atlantic Ocean. The downstream environment includes sensitive coastal and estuarine habitats that support diverse aquatic life. Advanced treatment at this plant helps reduce nutrient loading, protecting these ecosystems from eutrophication.