FORCALQUIER EST Wastewater Treatment Plant, Forcalquier, France

FORCALQUIER EST is an advanced wastewater treatment plant located in Forcalquier, in the Provence-Alpes-Côte d'Azur region of southeastern France. The plant serves a population of approximately 2,893 residents, reflecting its role as a medium-sized municipal facility in a rural setting. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 5,400 m³/day and an actual discharge volume of 516.11 m³/day, the plant operates well below its capacity, indicating room for future growth. As a French facility, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment levels based on population equivalents and receiving water sensitivity. The treated effluent is discharged into the local watershed, which ultimately drains into the Durance River, a major tributary of the Rhône River. The Rhône flows into the Mediterranean Sea, making the plant's advanced treatment crucial for protecting downstream aquatic ecosystems and coastal water quality.

The plant discharges into the Durance River basin, which feeds into the Rhône River and eventually the Mediterranean Sea. The region is characterized by a Mediterranean climate with seasonal rainfall, and the Durance supports diverse aquatic life, including fish species like the European eel. Advanced treatment helps minimize nutrient loading, protecting downstream water bodies from eutrophication and maintaining ecological balance.