ETE Brasilia Sul Wastewater Treatment Plant, Lago Sul, Distrito Federal, Brazil

ETE Brasilia Sul is a major wastewater treatment plant located in Lago Sul, Distrito Federal, Brazil, serving a population of approximately 641,168. It is part of the wastewater infrastructure for the Brasília metropolitan area, one of the largest urban centers in the Central-West region of Brazil. The plant plays a critical role in managing sewage from the southern sector of the capital. Brazil's wastewater treatment sector is regulated by the National Environmental Council (CONAMA) and the Ministry of Cities, with standards for effluent quality and treatment levels. For a plant of this scale, serving over 600,000 people, advanced treatment is typically required to meet environmental standards. The plant's operations are subject to federal and state environmental licensing, ensuring compliance with discharge limits. The treated effluent from ETE Brasilia Sul is discharged into the Paranoá Lake watershed, which is a key water body for the region. Paranoá Lake is an artificial reservoir created to supply water, support recreation, and regulate the local climate. The lake drains into the São Bartolomeu River, a tributary of the Paraná River basin, ultimately flowing into the Río de la Plata estuary. Protecting this watershed is vital for water quality and aquatic biodiversity in the Cerrado biome.

The plant discharges into the Paranoá Lake watershed, an artificial reservoir that supports water supply, recreation, and ecological balance in the Brasília region. The lake flows into the São Bartolomeu River, part of the Paraná River basin, which drains into the Río de la Plata estuary. The surrounding Cerrado savanna ecosystem is highly biodiverse, and maintaining effluent quality is crucial to prevent eutrophication and protect aquatic life in this sensitive watershed.