ETE VILA NOVA DE PORTAO - Secondary Wastewater Treatment in Lauro de Freitas, Bahia

ETE VILA NOVA DE PORTAO is a municipal wastewater treatment plant located in the Portão neighborhood of Lauro de Freitas, within the Metropolitan Region of Salvador, Bahia, Brazil. The plant serves a population of approximately 7,951 residents, classifying it as a small to medium agglomeration under Brazilian wastewater management standards. The plant provides secondary treatment, which is the minimum standard required under Brazil's national environmental regulations (CONAMA resolutions) for most urban wastewater discharges. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids before discharge. The treated effluent is discharged into the local watershed, which ultimately drains into the Atlantic Ocean via the coastal systems near Salvador. The plant's proximity to the coast (within 10 km) means its discharge can affect nearby beaches and estuarine ecosystems, making effective treatment critical for protecting marine water quality and public health.

The plant discharges into the coastal watershed of the Salvador metropolitan area, which flows into the Atlantic Ocean via small rivers and estuaries. This region supports diverse marine life, including mangroves and coral reefs, and is important for local fisheries and tourism. Effective secondary treatment helps reduce nutrient and pathogen loads that could otherwise contribute to eutrophication and coastal degradation.