ETE III BEIRA RIO Wastewater Treatment Plant, Foz do Iguaçu, Paraná, Brazil

ETE III BEIRA RIO is a wastewater treatment plant located in Foz do Iguaçu, a city in the state of Paraná, Brazil. The plant serves a population of around 30,795 people, placing it in the medium agglomeration category. It is situated in the Vila Paraguaia neighborhood along Avenida Beira Rio, near the Iguaçu River. As a Brazilian wastewater facility, ETE III BEIRA RIO is subject to national regulations under CONAMA resolutions and state-level environmental licensing by the Instituto Água e Terra (IAT) of Paraná. For a plant of this scale, secondary treatment is typically required to meet effluent standards before discharge into water bodies. The plant's treated effluent likely discharges into the Iguaçu River, which flows into the Paraná River and eventually to the Río de la Plata estuary. The Iguaçu River is ecologically significant, supporting diverse aquatic life and forming the Iguaçu Falls upstream. The plant plays a key role in protecting this watershed from untreated sewage.

The plant is located near the Iguaçu River, a major tributary of the Paraná River. The Paraná River flows southward to form the Río de la Plata estuary, which empties into the Atlantic Ocean. The Iguaçu River basin supports diverse aquatic ecosystems, including fish species and riparian vegetation. Downstream, the Paraná River is an important migratory corridor for fish and supports wetlands of ecological significance.