La Chapelle-la-Reine Wastewater Treatment Plant, Seine-et-Marne, France

The La Chapelle-la-Reine wastewater treatment plant is located in the commune of La Chapelle-la-Reine, within the Seine-et-Marne department of the Île-de-France region. It serves a population of approximately 2,250 residents and is part of the municipal wastewater infrastructure for this rural community. The plant provides secondary treatment, which is the standard required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent between 2,000 and 10,000. Its designed capacity is 4,000 m³/day, and current discharge volume is 401.40 m³/day, indicating significant spare capacity. Treated effluent is discharged into the local watershed, which ultimately drains into the Seine River basin. The Seine flows through Paris and into the English Channel, supporting diverse aquatic life and providing water for agriculture and industry. The plant plays a key role in protecting downstream water quality in this sensitive region.

The plant discharges into the Seine River basin, which flows through the Île-de-France region and eventually reaches the English Channel. The Seine supports a variety of fish species and is an important ecological corridor. Downstream, the estuary and bay provide habitat for migratory birds and marine life. Protecting water quality in this watershed is critical for both biodiversity and human use.