ETE Pinheirinho Wastewater Treatment Plant, Vinhedo, São Paulo, Brazil

ETE Pinheirinho is a municipal wastewater treatment plant located in Vinhedo, within the São Paulo state of Brazil. It serves a population of approximately 42,682 residents in the Jardim São Thomé neighborhood and surrounding areas, as part of the Campinas metropolitan region's sanitation infrastructure. As a plant serving a medium-sized agglomeration, ETE Pinheirinho operates under Brazil's national environmental regulations, which require appropriate treatment to protect water quality. The plant's treatment processes are designed to meet the standards set by the National Environment Council (CONAMA) and state-level environmental agencies, ensuring that discharged effluent complies with permitted limits. The treated wastewater from ETE Pinheirinho is discharged into local water bodies that ultimately drain into the Piracicaba River basin, a key tributary of the Tietê River. The Tietê River flows through São Paulo state and eventually reaches the Paraná River basin, supporting diverse aquatic ecosystems and providing water for downstream communities.

The plant discharges into the Piracicaba River basin, which feeds into the Tietê River, a major watercourse in São Paulo state. The Tietê River flows through the metropolitan region of São Paulo and eventually joins the Paraná River, forming part of the La Plata Basin. This watershed supports diverse aquatic life and is critical for water supply, agriculture, and recreation. Effective wastewater treatment at ETE Pinheirinho helps reduce nutrient and pollutant loads, protecting downstream ecosystems and water quality.