ETE Capuava Valinhos: Wastewater Treatment in Valinhos, São Paulo

ETE Capuava Valinhos is a wastewater treatment plant located in Valinhos, within the Campinas metropolitan region of São Paulo, Brazil. The facility serves a population of approximately 91,463 people, placing it in the medium-to-large agglomeration category for Brazilian wastewater systems. As a plant in Brazil, ETE Capuava Valinhos operates under the national regulatory framework established by the Ministry of Cities and the National Water Agency (ANA), which sets standards for effluent quality and environmental protection. For agglomerations of this scale, secondary treatment is typically required to reduce organic load and suspended solids before discharge. The treated effluent from the plant is discharged into local water bodies that drain into the Piracicaba River basin, a key watershed in southeastern Brazil. This basin ultimately flows into the Paraná River system, which supports diverse aquatic ecosystems and provides water for agriculture, industry, and drinking water for millions of people.

The plant's discharge enters the Piracicaba River basin, which is part of the larger Paraná River system. This watershed supports ecologically sensitive areas, including riparian forests and wetlands that provide habitat for fish and migratory birds. The Piracicaba River is a vital water source for the region, and maintaining effluent quality is critical to prevent eutrophication and protect downstream biodiversity.