ETE MARABA PAULISTA Wastewater Treatment Plant - Marabá Paulista, São Paulo, Brazil

ETE MARABA PAULISTA is a wastewater treatment plant located in Marabá Paulista, a municipality in the state of São Paulo, Brazil. The plant serves a population of 2,093 people, classifying it as a small-scale facility within the region's sanitation infrastructure. The plant provides secondary treatment, which is the standard biological treatment level required for municipal wastewater in Brazil under the National Environment Council (CONAMA) resolutions. This process typically involves biological degradation of organic matter, reducing biochemical oxygen demand and suspended solids before discharge. The plant treats an average daily volume of 271.80 cubic meters. The treated effluent is discharged into local water bodies that drain into the Paraná River basin, one of South America's major river systems. The downstream environment supports diverse aquatic life and is important for regional water supply and agriculture. Proper treatment helps protect water quality in this ecologically sensitive basin.

The plant discharges into the Paraná River basin, which flows through southeastern Brazil and eventually reaches the Río de la Plata estuary. This watershed supports important aquatic ecosystems and is a key water resource for agriculture and urban centers. Secondary treatment helps reduce nutrient loading and organic pollution, protecting downstream habitats and water quality.