ETE Guaimbê Wastewater Treatment Plant - Guaimbê, São Paulo, Brazil

ETE Guaimbê is a municipal wastewater treatment plant located in Guaimbê, a city in the state of São Paulo, Brazil. The plant serves a population of approximately 4,905 residents, classifying it as a small-scale facility within the region's sanitation infrastructure. The plant provides secondary treatment, which is the standard level required under Brazilian regulations (CONAMA resolutions) for municipalities of this size. Secondary treatment typically involves biological processes to remove organic matter and suspended solids, ensuring effluent meets basic quality standards before discharge. The plant treats an average daily flow of 534.01 m³. The treated effluent is discharged into local watercourses that drain into the Tietê River basin, a major tributary of the Paraná River system. This river network is ecologically significant, supporting diverse aquatic life and providing water for agriculture and urban use downstream. Proper treatment at ETE Guaimbê helps protect these water bodies from nutrient pollution and organic loading.

The plant discharges into streams within the Tietê River basin, which flows into the Paraná River and ultimately reaches the Río de la Plata estuary. This watershed supports important aquatic ecosystems, including fish migration routes and riparian habitats. The region's tropical climate and agricultural land use make nutrient management critical to prevent eutrophication in downstream reservoirs.