Eira Pedrinha Wastewater Treatment Plant, Condeixa-a-Nova, Portugal

Eira Pedrinha wastewater treatment plant is located in Condeixa-a-Nova, in the Coimbra district of central Portugal. The facility served the local community with secondary treatment, a standard level for inland plants under Portuguese and EU regulations. With a designed capacity of 2300 m³/day, it was sized for a small agglomeration. As a secondary treatment plant, Eira Pedrinha would have employed biological processes to reduce organic matter and suspended solids, meeting the requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland freshwater discharges. The plant is now closed, and its operational history reflects the evolving wastewater infrastructure in the region. The plant's treated effluent would have discharged into a local watercourse, likely a tributary of the Mondego River, which flows westward to the Atlantic Ocean near Figueira da Foz. The Mondego basin supports diverse aquatic life and is important for agriculture and water supply in central Portugal.

The plant's discharge would have entered a small stream in the Mondego River basin, which drains into the Atlantic Ocean. The Mondego is one of Portugal's major rivers, supporting ecosystems including fish species and riparian habitats. Downstream, the estuary near Figueira da Foz is an important area for migratory birds and aquatic biodiversity.