PERIERS Wastewater Treatment Plant, Périers, Normandie, France

PERIERS is a wastewater treatment plant located in Périers, a commune in the Manche department of Normandie, France. The plant serves a population of approximately 2,700 people and is situated in a rural setting near the D 340 road. It operates under the French regulatory framework, which implements the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this scale. The plant employs advanced treatment processes, ensuring high-quality effluent before discharge. With a designed capacity of 3,000 m³/day and an actual discharge volume of 481.68 m³/day, the facility operates well below its capacity, indicating room for future growth or seasonal variations. The treatment level meets the stringent requirements for sensitive areas under the directive. The treated effluent is discharged into local watercourses that drain into the English Channel. The plant plays a key role in protecting the region's water quality, supporting downstream ecosystems and coastal environments. Its advanced treatment helps reduce nutrient loads and pollutants, contributing to the ecological health of the Normandy coast.

The plant's discharge enters small streams that flow into the Taute River, which meanders through the Cotentin Peninsula before reaching the Baie des Veys and ultimately the English Channel. This coastal zone is ecologically sensitive, supporting diverse aquatic life and migratory birds. The advanced treatment at PERIERS helps minimize nutrient enrichment and protect the marine environment from eutrophication.