ETE Cambui Wastewater Treatment Plant, Campo Largo, Paraná, Brazil

ETE Cambui is a municipal wastewater treatment plant located in Campo Largo, within the Curitiba metropolitan region of Paraná, Brazil. The plant serves a population of approximately 37,170 people, classifying it as a medium-sized agglomeration under Brazilian wastewater management frameworks. Brazil's wastewater treatment standards are governed by federal regulations such as CONAMA Resolution 430/2011 and the National Basic Sanitation Plan (PLANSAB). For agglomerations of this scale, secondary treatment is typically required to reduce organic load and suspended solids before discharge. It operates within a regulatory environment that mandates compliance with effluent quality standards. The treated effluent is discharged into local water bodies within the Iguaçu River basin, which flows through the Paraná state and ultimately contributes to the Paraná River system. This river system is ecologically significant, supporting diverse aquatic life and providing water for agriculture and urban use. The plant plays a key role in protecting downstream water quality in the region.

The plant discharges into the Iguaçu River basin, which drains into the Paraná River and eventually the Río de la Plata estuary. This watershed supports diverse aquatic ecosystems and is important for regional water supply. The area is characterized by subtropical climate and mixed Atlantic Forest remnants, making water quality management critical for ecological health.