ETE ROSEIRA Wastewater Treatment Plant, Roseira, São Paulo, Brazil

ETE ROSEIRA is a wastewater treatment plant located in Roseira, a municipality in the state of São Paulo, Brazil. The plant serves a population of about 8,466 residents, placing it in the small-agglomeration category. It is situated in the Vale do Paraíba region, an area with significant industrial and agricultural activity. As a Brazilian wastewater facility, ETE ROSEIRA is subject to CONAMA Resolution 430/2011 and state-level environmental regulations, which set effluent quality standards for discharges into water bodies. For plants of this scale, secondary treatment is typically required to reduce organic load and suspended solids. The regulatory framework ensures compliance with national standards. The treated effluent from ETE ROSEIRA likely discharges into a local watercourse that flows into the Paraíba do Sul River basin, a major river system in southeastern Brazil. The Paraíba do Sul River ultimately drains into the Atlantic Ocean near Campos dos Goytacazes. The river supports diverse aquatic life and provides water for drinking, irrigation, and industry downstream.

ETE ROSEIRA is located in the Paraíba do Sul River basin, which drains the Vale do Paraíba region and flows into the Atlantic Ocean. The basin supports a variety of aquatic ecosystems and is a critical water source for multiple municipalities. Downstream environments include riparian forests and coastal habitats near the river mouth, which are sensitive to nutrient loading and pollution from upstream sources.