ETE PIRACICAMIRIM Wastewater Treatment Plant, Piracicaba, São Paulo

ETE PIRACICAMIRIM is a wastewater treatment plant located in Piracicaba, São Paulo, Brazil, along Rodovia Luiz de Queiroz in the Santa Cecília neighborhood. The plant serves a population of approximately 107,000 people, making it a medium-to-large agglomeration within the state's sanitation infrastructure. As a Brazilian wastewater facility, ETE PIRACICAMIRIM operates under the national regulatory framework established by the National Water Agency (ANA) and state environmental agencies such as CETESB in São Paulo. For agglomerations of this scale, secondary treatment is typically required to meet discharge standards for organic matter and suspended solids. The regulatory context ensures compliance with effluent quality standards. The plant discharges treated wastewater into local water bodies that ultimately drain into the Piracicaba River, a key tributary of the Tietê River basin. The Tietê River flows through São Paulo state and eventually reaches the Paraná River system, which empties into the Río de la Plata estuary. The Piracicaba River supports diverse aquatic life and is important for regional water supply and recreation.

The plant's treated effluent enters the Piracicaba River watershed, which flows into the Tietê River and then the Paraná River, ultimately reaching the Río de la Plata estuary. The Piracicaba River is ecologically significant, supporting fish populations and providing water for agriculture and urban use. Downstream ecosystems depend on maintaining water quality to prevent eutrophication and protect biodiversity.