ETE BACIA CENTRAL - Caçapava, São Paulo Wastewater Treatment Plant

ETE BACIA CENTRAL is a municipal wastewater treatment plant located in Caçapava, within the state of São Paulo, Brazil. It serves an estimated population of 26,447 residents, classifying it as a medium-sized agglomeration under Brazilian sanitation standards. The facility is situated in the Vale do Paraíba region, an area with significant industrial and urban development. As a plant operating in Brazil, ETE BACIA CENTRAL is subject to national regulations including CONAMA resolutions and state-level environmental licensing by CETESB. For a population of this scale, secondary treatment is typically required to meet discharge standards. It operates within a regulatory framework that mandates effluent quality control to protect receiving waters. The treated wastewater from ETE BACIA CENTRAL ultimately drains into the Paraíba do Sul River basin, a major watercourse that flows through São Paulo and Rio de Janeiro states before reaching the Atlantic Ocean. This river system supports diverse aquatic life and provides water for millions of people downstream. The plant plays a key role in maintaining water quality in this ecologically and economically important watershed.

The plant discharges into the Paraíba do Sul River basin, which flows eastward through the Serra do Mar and empties into the Atlantic Ocean near Campos dos Goytacazes. This river system is vital for water supply, agriculture, and industry in southeastern Brazil. The downstream environment includes sensitive coastal ecosystems such as mangroves and restinga forests, which depend on adequate freshwater quality and flow. Effective wastewater treatment at ETE BACIA CENTRAL helps reduce nutrient and pollutant loads that could otherwise impact these habitats.