Pleslin-Trigavou Ville des Champs Wastewater Treatment Plant, Brittany, France

Pleslin-Trigavou Ville des Champs is an advanced wastewater treatment plant located in Pleslin-Trigavou, a commune in the Côtes-d'Armor department of Brittany, France. The plant serves a population of approximately 5,138 people, classifying it as a small to medium agglomeration under French and EU regulations. The plant provides advanced treatment, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 3,400 m³/day and an actual discharge volume of 916.61 m³/day, the facility operates well within its capacity, ensuring effective treatment of municipal wastewater. The treated effluent is discharged into the local watershed, which ultimately drains into the English Channel via the Rance River estuary. This coastal discharge point is within 10 km of the coast, making the plant's advanced treatment level crucial for protecting the sensitive marine environment and supporting local biodiversity.

The plant discharges into the Rance River basin, which flows into the Rance estuary and then the English Channel. This coastal area supports diverse aquatic life, including migratory fish species and marine habitats. The advanced treatment level helps minimize nutrient and pollutant loads, protecting the estuary's ecological balance and the broader marine environment.