Domart-en-Ponthieu SE Wastewater Treatment Plant, Hauts-de-France, France

Domart-en-Ponthieu SE is an advanced wastewater treatment plant located in Domart-en-Ponthieu, a commune in the Somme department of Hauts-de-France, France. The plant serves a population of approximately 1,754 residents and has a designed capacity of 5,833 m³/day, with an average discharge volume of 312.91 m³/day. As an advanced treatment facility, it goes beyond secondary treatment to remove nutrients and other pollutants, meeting stringent French and EU standards. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations under 10,000 population equivalent are typically required to provide secondary treatment, but this plant's advanced level indicates a higher level of environmental protection, likely due to the sensitivity of the receiving environment. The plant discharges treated wastewater into local waterways that eventually drain into the Somme River basin. The Somme River flows into the English Channel, supporting diverse aquatic ecosystems. The advanced treatment helps protect downstream water quality and ecological health in this region of northern France.

The plant discharges into the Somme River basin, which flows through the Hauts-de-France region before reaching the English Channel. The Somme River supports a variety of aquatic life and is an important ecological corridor for migratory birds. The advanced treatment level helps minimize nutrient loading and protect the downstream estuarine and coastal environment.