IDL_POGGIO_DI_CECIO Wastewater Treatment Plant, San Miniato, Tuscany

IDL_POGGIO_DI_CECIO is a wastewater treatment plant located in San Miniato, a town in the province of Pisa, Tuscany, Italy. The plant serves a small population of 148 people, reflecting its role in a rural or peri-urban setting. It is situated inland, away from coastal areas, and operates under Italian and European regulatory frameworks. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a design capacity of 100 m³/day and an average daily discharge of 29.3 m³/day, the plant operates well below its capacity, indicating potential for future growth or seasonal variability. Secondary treatment typically involves biological oxidation and settling. The treated effluent is discharged into the local watershed, which ultimately drains into the Arno River basin. The Arno River flows through Tuscany and empties into the Tyrrhenian Sea near Pisa. The plant's discharge contributes to the water quality of the Arno, which supports diverse aquatic life and is used for irrigation and recreation downstream. Proper treatment helps protect the river ecosystem and the coastal marine environment.

The plant discharges into the Arno River basin, which flows through Tuscany and into the Tyrrhenian Sea. The Arno River supports a variety of fish species and is an important water resource for agriculture and tourism. Downstream, the river passes through the city of Pisa before reaching the sea, where nutrient loading from upstream sources can affect coastal water quality. The plant's secondary treatment reduces organic pollutants and helps maintain the ecological balance of the river and its estuary.