ETE Itirapina Wastewater Treatment Plant, Itirapina, São Paulo, Brazil

ETE Itirapina is a wastewater treatment plant located in Itirapina, a municipality in the state of São Paulo, Brazil. The plant serves a population of around 13,832 residents, placing it in the small to medium agglomeration category for Brazilian wastewater infrastructure. It is situated along Rodovia Municipal Doutor Fernando de Arruda Botelho, in the Região Imediata de São Carlos. As a facility in Brazil, ETE Itirapina is subject to the country's environmental legislation, including CONAMA resolutions and state-level regulations from CETESB (São Paulo's environmental agency). For plants of this scale, secondary treatment is typically required to reduce organic load and suspended solids before discharge. The plant's operational details and treatment process are managed by the local municipal sanitation authority. The treated effluent from ETE Itirapina is discharged into local water bodies that drain into the Paraná River basin, one of South America's major river systems. This basin supports diverse aquatic ecosystems and provides water for agriculture, industry, and drinking water downstream. Proper treatment at this plant helps protect water quality in the region's streams and rivers.

The plant's discharge enters local streams that flow into the Corumbataí River, a tributary of the Piracicaba River, which is part of the Paraná River basin. This basin ultimately drains into the Río de la Plata estuary. The region's watershed supports diverse aquatic life and is important for water supply in São Paulo state. Effective wastewater treatment helps prevent nutrient pollution and maintain ecological balance in these downstream waters.