ETE NOSSO TETO Wastewater Treatment Plant - Santa Rosa de Viterbo, São Paulo, Brazil

ETE NOSSO TETO is a wastewater treatment plant located in Santa Rosa de Viterbo, within the state of São Paulo, Brazil. The plant serves a population of about 4,044 people, classifying it as a small-scale municipal facility in the interior of the state. The plant provides secondary treatment, which is the standard level required under Brazilian regulations (CONAMA resolutions and state-level environmental licensing) for communities of this size. Secondary treatment typically involves biological processes to remove organic matter and suspended solids, ensuring effluent quality before discharge. The treated wastewater is discharged into local water bodies that ultimately drain into the Rio Pardo basin, a tributary of the Rio Grande, which flows into the Paraná River system. This region is part of the Paraná Basin, one of the largest river systems in South America, supporting diverse aquatic ecosystems and agricultural activities downstream.

The plant discharges into local streams that feed into the Rio Pardo, a tributary of the Rio Grande, which is part of the Paraná River basin. The Paraná River system is ecologically significant, supporting diverse fish species and providing water for agriculture and urban areas. The region's watershed is sensitive to nutrient loading, making secondary treatment important for protecting downstream water quality.