RABASTENS DE BIGORRE Wastewater Treatment Plant, Rabastens-de-Bigorre, Occitanie

RABASTENS DE BIGORRE is a municipal wastewater treatment plant located in Rabastens-de-Bigorre, a commune in the Hautes-Pyrénées department of Occitanie, southern France. The plant serves a population of about 7,500 people, placing it in the small-to-medium agglomeration category under French and EU classifications. As a French facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. It is expected to meet national standards set by the French water agencies. The treated effluent is discharged into local watercourses that ultimately drain into the Adour River basin, flowing toward the Bay of Biscay in the Atlantic Ocean. The plant plays a key role in protecting the region's water quality and supporting the ecological health of downstream aquatic habitats.

The plant discharges into the Adour River basin, which flows through southwestern France to the Bay of Biscay. This watershed supports diverse aquatic life and is important for migratory fish species such as salmon and eels. The plant's treatment helps maintain water quality in the river system, which is used for agriculture, recreation, and drinking water supply downstream.