Overview
ALIZAY is an advanced wastewater treatment plant in Alizay, Normandie, France, serving a population of 1,482. It discharges 264.39 m³/day of treated effluent.
The ALIZAY wastewater treatment plant serves the small commune of Alizay in the Normandie region of northern France. Located within the Eure department, the facility is situated near the Seine River basin and provides essential sanitation services to the local population. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 2,020 m³/day and a current discharge volume of 264.39 m³/day, the plant 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 Seine River and then into the English Channel. The advanced treatment level helps protect downstream aquatic ecosystems and supports the ecological health of the Seine estuary, a vital habitat for migratory fish and diverse wildlife.
Environmental context
The plant discharges into the Seine River basin, which flows through the Paris region and empties into the English Channel via the Seine estuary. The estuary is an ecologically sensitive area that supports diverse aquatic life, including migratory fish species such as salmon and eel. Advanced treatment at this plant helps reduce nutrient loads and pollutants, contributing to the overall health of the downstream environment.
Frequently asked questions
The ALIZAY plant is located in Alizay, a commune in the Eure department of the Normandie region in northern France. Its address is Ashland Specialities France, Alizay, Les Andelys, Eure, Normandie.
The plant serves a population of 1,482 people, making it a small agglomeration under the EU Urban Waste Water Treatment Directive.
The ALIZAY plant provides advanced treatment, which includes nutrient removal and disinfection beyond secondary treatment. This level of treatment is often required for sensitive receiving environments.
Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent (PE) of less than 2,000 are generally required to provide appropriate treatment. The ALIZAY plant, serving 1,482 people, meets this requirement with advanced treatment, exceeding the minimum secondary treatment standard.
The ALIZAY plant has a designed capacity of 2,020 m³ per day. Its current discharge volume is 264.39 m³ per day, indicating that the plant operates well below its capacity.
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