ORTHEZ INTECOMMUNAUTE 2 Wastewater Treatment Plant, Orthez, Nouvelle-Aquitaine

ORTHEZ INTECOMMUNAUTE 2 is a municipal wastewater treatment plant located in Castétarbe, Orthez, within the Pyrénées-Atlantiques department of Nouvelle-Aquitaine, France. The plant serves a population of around 10,032, placing it in the small-to-medium agglomeration category under French and EU regulations. As a French plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into freshwater. The directive ensures that appropriate treatment standards are met to protect receiving waters. The plant's treated effluent likely discharges into the Gave de Pau river, which flows through Orthez and eventually joins the Adour river before reaching the Bay of Biscay. This watershed supports diverse aquatic life and is important for regional water quality and ecological health.

The plant's discharge likely enters the Gave de Pau river, a tributary of the Adour river, which flows into the Bay of Biscay. This watershed supports diverse aquatic ecosystems, including fish species such as salmon and trout, and is an important migratory corridor. The plant's treatment performance is critical to maintaining water quality in this sensitive river system.