Fiaes _S Jorge Wastewater Treatment Plant, Fiães, Portugal

The Fiaes _S Jorge wastewater treatment plant is located in Fiães, Santa Maria da Feira, Aveiro, Portugal. It serves a population of approximately 46,000 people, classifying it as a medium agglomeration under EU standards. The plant is situated near the Rio Uíma, a watercourse in the Aveiro district. As a Portuguese facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The plant's infrastructure supports the local community's wastewater management needs. The treated effluent is discharged into the Rio Uíma, which flows into the Atlantic Ocean via the Aveiro lagoon system. This coastal region supports diverse aquatic life and is ecologically sensitive. The plant plays a key role in protecting downstream water quality and the marine environment.

The plant discharges into the Rio Uíma, a river that flows into the Aveiro lagoon (Ria de Aveiro), a coastal lagoon connected to the Atlantic Ocean. This watershed supports diverse aquatic habitats, including fish and bird species. The lagoon is an important ecological area for migratory birds and marine life, making effective wastewater treatment crucial for preserving water quality and biodiversity.