ARTIX 2 Wastewater Treatment Plant, Artix, Nouvelle-Aquitaine, France

ARTIX 2 is an advanced wastewater treatment plant located in Artix, a commune in the Pyrénées-Atlantiques department of Nouvelle-Aquitaine, southwestern France. The facility serves a population of approximately 4,795 residents and is part of the region's municipal wastewater infrastructure. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 4,200 m³ per day and an average discharge volume of 855.42 m³ per day, the plant operates well within its capacity. As a French facility, it operates under the national regulations transposing the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment levels based on the size of the agglomeration and the sensitivity of the receiving environment. The treated effluent is discharged into local watercourses that ultimately drain into the Gave de Pau river, a tributary of the Adour river, which flows into the Bay of Biscay in the Atlantic Ocean. The plant plays a key role in protecting the water quality of the Gave de Pau and downstream ecosystems, including the Adour estuary, which supports diverse aquatic life and is important for regional biodiversity.

The treated effluent from ARTIX 2 enters local streams that feed into the Gave de Pau river, a major watercourse in the Adour basin. The Gave de Pau flows through the Pyrenees foothills and joins the Adour river near Bayonne, eventually reaching the Bay of Biscay. This watershed supports diverse aquatic habitats, including salmonid spawning grounds and migratory corridors for eels and other species. The plant's advanced treatment helps reduce nutrient loading and protect downstream water quality in this ecologically sensitive region.