ETE Vista Verde Wastewater Treatment Plant, São José dos Campos, São Paulo

ETE Vista Verde is a wastewater treatment plant located in the Cidade Vista Verde neighborhood of São José dos Campos, in the state of São Paulo, Brazil. The plant serves a population of approximately 16,188 residents, placing it in the small-to-medium agglomeration category. As a Brazilian wastewater facility, ETE Vista Verde is subject to CONAMA Resolution 430/2011 and state-level environmental regulations from CETESB (São Paulo's environmental agency). These regulations mandate treatment standards for effluent discharge into water bodies. For plants of this scale, secondary treatment is typically required to reduce organic load and suspended solids. The plant's treated effluent is discharged into the Paraíba do Sul River basin, which flows through the Vale do Paraíba region. The Paraíba do Sul River is a major water source for southeastern Brazil, supplying drinking water to millions and supporting diverse aquatic ecosystems. The river ultimately drains into the Atlantic Ocean near Campos dos Goytacazes, Rio de Janeiro.

The plant discharges into the Paraíba do Sul River basin, a critical water resource for the densely populated Southeast region of Brazil. The river supports a variety of fish species and is an important migratory corridor for aquatic life. Downstream, the river flows through agricultural and urban areas before reaching the Atlantic Ocean, where it influences coastal water quality and estuarine habitats.