IDL_ROSELLE Wastewater Treatment Plant, Grosseto, Tuscany, Italy

IDL_ROSELLE is a wastewater treatment plant located in the Pelona area of Bagno Roselle, near Grosseto in the Tuscany region of Italy. The plant serves a population of approximately 2,312 people and is part of the municipal wastewater infrastructure for the Grosseto area. The plant provides secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 5,000 m³/day and a current discharge volume of 457.69 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into the local water system, which ultimately drains into the Tyrrhenian Sea. The plant's location in the Ombrone River basin contributes to the protection of downstream aquatic ecosystems and coastal waters, supporting regional water quality goals.

The plant discharges into the Ombrone River basin, which flows through southern Tuscany and empties into the Tyrrhenian Sea near the Maremma region. This coastal area supports diverse marine life and is an important ecological zone for migratory birds and fish species. The secondary treatment provided helps reduce nutrient loads and organic pollutants, protecting the sensitive coastal environment from eutrophication and maintaining water quality for tourism and fisheries.