Juillan Village nouvelle station - Advanced Wastewater Treatment in Juillan, Occitanie

Juillan Village nouvelle station is an advanced wastewater treatment facility located in Juillan, a commune in the Hautes-Pyrénées department of Occitanie, southern France. The plant serves a population of approximately 5,400 residents, providing essential sanitation services for this community near Tarbes. As an advanced treatment plant, it goes beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. The plant has a designed capacity of 9,000 m³/day and currently discharges an average of 963.35 m³/day, indicating significant reserve capacity. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations of this size are required to provide secondary treatment, and Juillan's advanced level exceeds these minimum standards. The treated effluent is discharged into the local watershed, which ultimately drains into the Adour River system and then to the Bay of Biscay. The plant plays a key role in protecting the region's water quality, supporting both ecological health and downstream uses such as agriculture and recreation.

The plant discharges into the Adour River basin, which flows through the Pyrénées-Atlantiques and Landes departments before reaching the Bay of Biscay. The Adour estuary supports diverse aquatic life, including migratory fish species such as salmon and eel. Advanced treatment helps reduce nutrient loading, protecting downstream water quality and the sensitive coastal environment.