MARSILLY Charente Maritime Wastewater Treatment Plant - Marsilly, Nouvelle-Aquitaine

MARSILLY Charente Maritime is an advanced wastewater treatment plant located in Marsilly, a commune in the Charente-Maritime department of Nouvelle-Aquitaine, France. The plant serves a population of 3,220 and is situated near the Atlantic coast, within 10 km of the shoreline. It operates as part of the municipal wastewater infrastructure for the La Rochelle area. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. Its designed capacity is 3,400 m³/day, and it currently discharges 574.44 m³/day of treated wastewater. As a French facility, it operates under the national regulations transposing the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for sensitive coastal areas. The treated effluent is discharged into the local watershed, which drains into the Atlantic Ocean via the Pertuis d'Antioche. The coastal environment supports diverse marine life and is an important area for fisheries and tourism. The plant's advanced treatment helps protect the sensitive coastal ecosystem from nutrient pollution.

The plant discharges into the local watershed that flows into the Pertuis d'Antioche, a strait connecting to the Bay of Biscay in the Atlantic Ocean. This coastal area supports diverse marine habitats, including seagrass beds and fish spawning grounds. The advanced treatment level helps minimize nutrient loading, protecting water quality in the ecologically sensitive coastal zone.