CARRU Wastewater Treatment Plant, Carrù, Piemonte, Italy

The CARRU wastewater treatment plant is located in Carrù, a town in the Piemonte region of northwestern Italy. Serving a population of 3,400, the plant is part of the municipal infrastructure managed under Italian and EU regulations. The plant's designed capacity is 3,400 population equivalents, matching the served population, indicating adequate sizing for the community. The plant operates with secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids, ensuring compliance with discharge standards. The plant's daily discharge volume of 679.45 cubic meters reflects the flow from the community. The treated effluent is discharged into local watercourses that ultimately drain into the Po River basin, one of Italy's most important watersheds. The Po River flows eastward to the Adriatic Sea, supporting diverse aquatic life and agricultural activities. The plant's secondary treatment helps protect downstream water quality and ecosystems.

The CARRU plant discharges into the Po River basin, which drains into the Adriatic Sea. The Po basin supports extensive agriculture and is ecologically significant for fish species and migratory birds. Secondary treatment reduces organic pollutants and nutrients, mitigating eutrophication risks in the Adriatic coastal zone.