IDL_CENAIA Wastewater Treatment Plant, Cenaia, Tuscany, Italy

IDL_CENAIA is an advanced wastewater treatment plant located in Cenaia, a frazione of Crespina Lorenzana in the province of Pisa, Tuscany, Italy. The plant serves a small population of approximately 2,056 residents and is part of the region's municipal wastewater infrastructure. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 3,600 m³/day and a current discharge volume of 407.02 m³/day, the plant operates well below its capacity, indicating room for future growth. As an Italian facility, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment levels based on the sensitivity of receiving waters. The treated effluent is discharged into local watercourses that eventually drain into the Ligurian Sea via the Arno River basin. The plant's location about 10-50 km from the coast means its discharge contributes to the health of downstream aquatic ecosystems and the marine environment.

The plant discharges into local streams that flow into the Arno River, which empties into the Ligurian Sea near Pisa. The Arno basin supports diverse aquatic life and is an important water resource for Tuscany. The advanced treatment helps protect downstream water quality, reducing nutrient loading that could otherwise contribute to eutrophication in coastal waters.