ETE DONANA Wastewater Treatment Plant - Donana, Campos dos Goytacazes, Rio de Janeiro

ETE DONANA is a wastewater treatment plant located in the Donana district of Campos dos Goytacazes, in the state of Rio de Janeiro, Brazil. The plant serves a population of approximately 15,308 residents, placing it in the small-to-medium agglomeration category for Brazilian wastewater infrastructure. As a plant in Brazil, ETE DONANA is subject to the National Environmental Council (CONAMA) resolutions and state-level environmental regulations, which set effluent discharge standards. For plants of this scale, secondary treatment is typically required to meet water quality criteria. The plant's designed capacity is 1.00 cubic meter per second, indicating its intended scale for treating municipal wastewater. The treated effluent from ETE DONANA is discharged into local water bodies that drain into the Paraíba do Sul River basin, a major river system in southeastern Brazil. This river flows into the Atlantic Ocean near Campos dos Goytacazes, supporting diverse aquatic ecosystems and providing water for agriculture and urban use. Proper treatment is essential to protect downstream water quality and ecological health.

The plant discharges into the Paraíba do Sul River basin, which flows through the state of Rio de Janeiro and empties into the Atlantic Ocean. This river system supports a variety of aquatic life and is a critical water source for the region. The downstream environment includes coastal ecosystems that are sensitive to nutrient pollution, making effective wastewater treatment important for maintaining ecological balance.