ISOLA2000 n2 Wastewater Treatment Plant, Isola, Provence-Alpes-Côte d'Azur

ISOLA2000 n2 is a wastewater treatment plant located in Isola, a commune in the Alpes-Maritimes department of the Provence-Alpes-Côte d'Azur region in southeastern France. The plant serves a population of about 5,557 people and is situated in a mountainous area near the Italian border. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 9,650 m³/day and an actual discharge volume of 991.36 m³/day, the plant operates well below its capacity. As a French facility, it falls under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment levels for sensitive areas. The treated effluent is discharged into the local watershed, which ultimately drains into the Mediterranean Sea via the Var River system. The plant plays a crucial role in protecting the alpine streams and downstream aquatic ecosystems from nutrient pollution and pathogens.

The plant discharges into the mountainous watershed of the Alpes-Maritimes, which feeds into the Var River and eventually the Mediterranean Sea. This region features sensitive alpine streams that support diverse aquatic life, including endemic fish species. The advanced treatment helps minimize nutrient loading and protects downstream water quality in a region known for its biodiversity and tourism.