ETE Paulistano II - Secondary Wastewater Treatment in Franca, São Paulo

ETE Paulistano II is a municipal wastewater treatment plant located in Franca, within the state of São Paulo, Brazil. The facility serves a population of approximately 4,112 residents, classifying it as a small-scale treatment operation in the region. The plant provides secondary treatment, which is the standard biological process required under Brazilian regulations (CONAMA resolutions) for most urban wastewater. With a daily discharge volume of 555.90 cubic meters, the plant operates within the typical scale for small communities in São Paulo state. The treated effluent is discharged into local water bodies that ultimately drain into the Rio Grande, a major tributary of the Paraná River basin. This basin supports extensive agricultural activity and provides water for multiple municipalities downstream. Proper treatment at ETE Paulistano II helps protect water quality in this ecologically and economically important watershed.

The plant discharges into the Rio Grande basin, which flows into the Paraná River and eventually reaches the Río de la Plata estuary. This watershed supports diverse aquatic life and is critical for irrigation and drinking water supplies in southeastern Brazil. The secondary treatment process reduces organic pollutants and helps maintain water quality in this agriculturally intensive region.