NOYON Wastewater Treatment Plant, Noyon, Hauts-de-France, France

The NOYON wastewater treatment plant is located in Noyon, within the Hauts-de-France region of northern France. It serves a population of approximately 24,428 people, classifying it as a medium-sized agglomeration under EU regulations. The plant is situated near the Oise River, a tributary of the Seine, and plays a key role in protecting local water quality. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations of this size are required to provide secondary treatment as a minimum. In sensitive areas, such as those draining into the Seine basin, tertiary treatment may be mandated to reduce nutrient loads. The plant's operational details are consistent with these regulatory expectations, ensuring compliance with European water quality standards. The treated effluent from NOYON is discharged into the Oise River, which flows into the Seine and ultimately reaches the English Channel. This waterway supports diverse aquatic life and is an important ecological corridor. The plant's operation helps mitigate nutrient pollution and protects downstream ecosystems, including the Seine estuary and coastal marine environment.

The NOYON plant discharges into the Oise River, a major tributary of the Seine. The Seine basin drains into the English Channel, supporting diverse aquatic habitats and migratory fish species. The region's agricultural and urban runoff can contribute to nutrient loading, making effective wastewater treatment critical for preventing eutrophication in downstream waters.