Overview
Canas de Senhorim wastewater treatment plant serves 3,800 people in Viseu, Portugal. It provides secondary treatment and discharges 633.58 m³/day of treated effluent.
Canas de Senhorim wastewater treatment plant is located in the town of Canas de Senhorim, within the municipality of Nelas, in the Viseu district of central Portugal. The facility serves a population of approximately 3,800 residents, classifying it as a small agglomeration under Portuguese and EU regulations. The plant operates with secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland freshwater discharges from agglomerations of this size. The designed capacity is 3,800 m³/day, and the current discharge volume is 633.58 m³/day, indicating operational headroom. The treated effluent is discharged into a local watercourse that flows into the Dão River, a tributary of the Mondego River, which ultimately reaches the Atlantic Ocean near Figueira da Foz. The Mondego basin supports diverse aquatic life and is an important ecological corridor in central Portugal.
Environmental context
The plant discharges into a small stream that feeds the Dão River, part of the Mondego River basin. The Mondego is the longest river entirely within Portugal, flowing through agricultural and forested areas before reaching the Atlantic. The downstream environment supports fish species such as barbel and nase, and the river's estuarine zone is a nursery for marine life. The plant's secondary treatment helps protect water quality in this sensitive inland watershed.
Frequently asked questions
The plant is located in Canas de Senhorim, a town in the municipality of Nelas, Viseu district, central Portugal.
The plant serves approximately 3,800 people, making it a small agglomeration under EU classification.
The plant discharges treated effluent into a local stream that flows into the Dão River, part of the Mondego River basin, which reaches the Atlantic Ocean.
The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive for inland discharges from agglomerations of this size.
As a Portuguese plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC) and national water quality standards, with permits issued by the Portuguese Environment Agency (APA).
Nearby plants