ETE ABC Wastewater Treatment Plant, São Paulo, Brazil

ETE ABC is a municipal wastewater treatment plant located in the Sacomã district of São Paulo, Brazil. Serving approximately 19,400 residents, the plant provides secondary treatment, which is a standard level for communities of this size in the São Paulo metropolitan area. The plant operates under Brazil's national environmental regulations, which mandate secondary treatment for urban wastewater to reduce organic pollutants and suspended solids. With a discharge volume of about 708 cubic meters per day, the facility plays a key role in managing wastewater from the densely populated region. Treated effluent from ETE ABC is discharged into local watercourses that flow into the Tietê River basin, a major river system in southeastern Brazil. The Tietê River ultimately drains into the Paraná River basin, which supports diverse aquatic ecosystems and provides water for millions of people. Proper treatment at plants like ETE ABC helps protect downstream water quality and ecological health.

The plant discharges into the Tietê River basin, which flows through the São Paulo metropolitan region and eventually joins the Paraná River system. The Tietê River is ecologically significant, supporting fish populations and providing water for agriculture and urban use. Downstream, the Paraná River feeds into the Río de la Plata estuary, a critical habitat for migratory species and a key economic resource for the region.