ETE QUINTANA Wastewater Treatment Plant, Quintana, São Paulo, Brazil

ETE QUINTANA is a municipal wastewater treatment plant located in Quintana, within the São Paulo state of Brazil. The facility serves a population of approximately 5,555 residents, classifying it as a small-scale treatment operation in the region. The plant provides secondary treatment, which is the standard level required under Brazilian regulations for communities of this size. Brazilian environmental law, through CONAMA resolutions and state-level permits, mandates secondary treatment to reduce organic load and suspended solids before discharge. The plant processes an average daily flow of 709.66 cubic meters. Treated effluent from ETE QUINTANA is discharged into local watercourses that ultimately drain into the Paraná River basin, one of South America's major river systems. This basin supports diverse aquatic ecosystems and provides water for agriculture and drinking water downstream. Proper treatment at this plant helps protect water quality in the region's streams and rivers.

The plant discharges into local streams that flow into the Paraná River basin, which drains into the Río de la Plata estuary. This watershed supports diverse aquatic life, including migratory fish species, and provides water for irrigation and human consumption. Secondary treatment reduces organic pollution and helps maintain ecological balance in the receiving waters.