Overview
ETE California Barra do Piraí is a secondary treatment plant serving about 7,800 people in Barra do Piraí, Rio de Janeiro, Brazil. It discharges approximately 907 m³/day of treated wastewater.
ETE California Barra do Piraí is a municipal wastewater treatment plant located in Barra do Piraí, within the state of Rio de Janeiro, Brazil. The plant serves a population of approximately 7,800 residents, placing it in the small-to-medium agglomeration category. It is situated along Rodovia Lúcio Meira, a key regional roadway. The plant provides secondary treatment, which is the standard level required under Brazilian regulations (CONAMA resolutions) for most urban wastewater facilities. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into a local watercourse that ultimately drains into the Paraíba do Sul River basin, one of the most important river systems in southeastern Brazil. The Paraíba do Sul flows through the states of São Paulo, Rio de Janeiro, and Minas Gerais before reaching the Atlantic Ocean near Campos dos Goytacazes. The plant's operation helps protect downstream water quality and supports the ecological health of the basin.
Environmental context
The plant discharges into a tributary of the Paraíba do Sul River, which flows through the densely populated and industrialized Paraíba Valley. The river is a critical water source for millions and supports diverse aquatic life, including migratory fish species. Downstream, the river enters the Atlantic Ocean near the city of Campos dos Goytacazes, where its estuary provides important nursery habitats for marine life. The secondary treatment provided by the plant helps reduce nutrient and organic pollution loads to this sensitive river system.
Frequently asked questions
The plant is located on Rodovia Lúcio Meira in Barra do Piraí, within the state of Rio de Janeiro, Brazil. It serves the local urban area.
The plant serves approximately 7,800 people, classifying it as a small-to-medium agglomeration under Brazilian wastewater management categories.
The treated effluent is discharged into a local watercourse that flows into the Paraíba do Sul River basin. The river ultimately reaches the Atlantic Ocean.
The plant provides secondary treatment, which is the standard required by Brazilian environmental regulations (CONAMA) for most urban wastewater facilities. This typically includes biological treatment to reduce organic pollutants.
Brazil's wastewater treatment is regulated by CONAMA resolutions and state environmental agencies. Plants serving agglomerations of this size are generally required to meet secondary treatment standards and comply with discharge permits that set limits on biochemical oxygen demand (BOD) and other parameters.
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