Overview
IDL_IL_TREBBIO is a wastewater treatment plant serving about 20,842 people in Pistrino, Umbria, Italy. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
IDL_IL_TREBBIO is a wastewater treatment plant located in Pistrino, a frazione of Citerna in the Umbria region of central Italy. The plant serves a population of approximately 20,842, placing it in the medium agglomeration category under EU classification. Its inland position in the Tiber River basin reflects the region's hilly terrain and agricultural landscape. As an Italian plant serving a population between 10,000 and 150,000, IDL_IL_TREBBIO is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum standard. The directive also mandates more stringent treatment if the receiving waters are designated as sensitive areas, such as those prone to eutrophication. Italy implements these requirements through national legislation, with regional environmental agencies overseeing compliance. The plant's treated effluent likely discharges into a tributary of the Tiber River, which flows south through Umbria and Lazio before entering the Tyrrhenian Sea near Rome. The Tiber basin supports diverse aquatic life and is an important water resource for agriculture and drinking water. Proper treatment at this plant helps protect downstream ecosystems and water quality in the Tiber River and its delta.
Environmental context
The plant is situated in the upper Tiber River basin, a major watercourse that drains much of central Italy. The Tiber flows approximately 405 km from Monte Fumaiolo to the Tyrrhenian Sea, passing through Perugia and Rome. The basin supports a variety of habitats, including riparian forests and wetlands, and is home to species such as the Italian barbel and the European eel. Downstream, the Tiber delta is an ecologically sensitive area with coastal lagoons and salt marshes that provide important bird habitat. Effective wastewater treatment in the upper basin is critical to maintaining water quality throughout the river system and reducing nutrient loads that could contribute to eutrophication in the Tyrrhenian Sea.
Frequently asked questions
IDL_IL_TREBBIO is located in Pistrino, a frazione of Citerna in the province of Perugia, Umbria, Italy. The full address is Ca' de' Conte, Pistrino, Citerna, Perugia, Umbria, 06010.
The plant serves approximately 20,842 people, classifying it as a medium-sized agglomeration under EU wastewater treatment regulations.
The treated effluent from IDL_IL_TREBBIO is likely discharged into a local watercourse that feeds into the Tiber River, which flows to the Tyrrhenian Sea. The plant's inland location suggests a river discharge.
As an Italian plant serving over 10,000 people, IDL_IL_TREBBIO operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment. Italy transposes this directive through national law, with regional environmental agencies (ARPA) overseeing permits and compliance.
For agglomerations between 10,000 and 150,000 population equivalent, the EU UWWTD mandates secondary treatment (biological treatment). In sensitive areas, such as catchments prone to eutrophication, tertiary treatment (nutrient removal) may be required. Italian plants often include activated sludge processes with nitrogen and phosphorus removal where needed.
Nearby plants