ETE GUARA Wastewater Treatment Plant, Guará, São Paulo, Brazil

ETE GUARA is a municipal wastewater treatment plant located in Guará, within the state of São Paulo, Brazil. The facility serves a population of approximately 18,989 people, placing it in the medium-sized agglomeration category for Brazilian wastewater infrastructure. It is situated in the Ribeirão Preto intermediate geographic region, an area characterized by agricultural activity and urban development. As a plant serving a medium-sized community in Brazil, ETE GUARA operates under the national regulatory framework for wastewater treatment. Brazilian legislation, including CONAMA resolutions and state-level environmental agencies, sets standards for effluent quality and treatment requirements. For agglomerations of this scale, secondary treatment is typically expected to protect receiving water bodies and public health. The plant's treated effluent is discharged into local watercourses that drain into the Rio Grande basin, part of the Paraná River system. This river network ultimately flows into the Río de la Plata estuary. The surrounding region includes agricultural lands and small urban areas, making proper wastewater treatment essential for maintaining water quality in downstream ecosystems.

ETE GUARA discharges into local streams that feed the Rio Grande, a major tributary of the Paraná River. The Paraná River system drains into the Río de la Plata estuary, supporting diverse aquatic life and providing water for agriculture and communities. The region's watershed is ecologically sensitive due to intensive agriculture, which can contribute nutrient runoff; proper treatment helps mitigate eutrophication risks downstream.