ETE Itangua Wastewater Treatment Plant, Sorocaba, São Paulo, Brazil

ETE Itangua is a wastewater treatment plant located in Sorocaba, within the state of São Paulo, Brazil. The plant serves a population of approximately 95,000 residents, making it a medium-to-large agglomeration under Brazilian sanitation standards. Sorocaba is a major industrial and urban center in the Southeast region, and the plant plays a key role in managing the city's domestic and industrial wastewater. As a Brazilian wastewater facility, ETE Itangua operates under the national regulatory framework established by the Ministry of Cities and the National Water Agency (ANA), which sets standards for effluent quality and water resource protection. For agglomerations of this scale, secondary treatment is typically required to reduce organic load and suspended solids before discharge. It is expected to comply with CONAMA Resolution 430/2011, which governs effluent discharge standards across Brazil. The treated effluent from ETE Itangua is discharged into local water bodies that drain into the Sorocaba River, a tributary of the Tietê River. The Tietê River flows through São Paulo state and eventually reaches the Paraná River basin, which is part of the larger Río de la Plata system. The plant's operation is critical for protecting downstream aquatic ecosystems and ensuring water quality for communities along the Sorocaba and Tietê rivers.

The plant's treated effluent enters the Sorocaba River, which flows into the Tietê River, a major waterway in São Paulo state. The Tietê River ultimately drains into the Paraná River basin, contributing to the Río de la Plata estuary. The Sorocaba River supports diverse aquatic life and is used for recreation and water supply downstream. Protecting this watershed from nutrient pollution and pathogens is essential for maintaining ecological balance and public health in the region.