Bardonecchia Wastewater Treatment Plant: Alpine Town Facility in Piemonte, Italy

The Bardonecchia wastewater treatment plant is located in the alpine town of Bardonecchia, in the Piemonte region of northwestern Italy. Situated in the Susa Valley near the French border, the plant serves a population of about 10,753 residents, typical of a small mountain community. The facility is part of the municipal wastewater infrastructure managed by local authorities. As a plant serving a population between 10,000 and 100,000, it falls under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment as a minimum standard. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. Given the alpine location, the plant likely operates with a biological treatment process to meet stringent discharge standards for mountain streams. The treated effluent is discharged into local watercourses that feed into the Dora Riparia river, a tributary of the Po River. The Po River basin is the largest in Italy and ultimately drains into the Adriatic Sea. The alpine watershed supports sensitive aquatic ecosystems, including cold-water fish species, making effective treatment essential for environmental protection.

The plant discharges into local streams that flow into the Dora Riparia river, a major tributary of the Po River. The Po River basin drains into the Adriatic Sea, supporting diverse aquatic life and important migratory corridors. The alpine environment is ecologically sensitive, with cold-water habitats that require high water quality to sustain native fish populations and macroinvertebrate communities.