ETE Lavapés Wastewater Treatment Plant, São José dos Campos, Brazil

ETE Lavapés is a key wastewater treatment facility located in São José dos Campos, within the state of São Paulo, Brazil. It serves a population of over 364,000 residents, making it a large-scale municipal plant in the region. The plant is situated in the Vale do Paraíba region, an important industrial and urban corridor between São Paulo and Rio de Janeiro. As a large agglomeration serving more than 150,000 people, ETE Lavapés is expected to meet stringent treatment standards under Brazilian regulations, which align with international norms for wastewater management. The plant's treatment processes are designed to reduce organic load and nutrients before discharge, protecting downstream water quality. Brazilian environmental laws, such as CONAMA resolutions, mandate appropriate treatment levels for such facilities. The treated effluent from ETE Lavapés is discharged into the Paraíba do Sul River basin, a critical water source for the region. The river flows through the Vale do Paraíba and eventually reaches the Atlantic Ocean near Campos dos Goytacazes. This watershed supports diverse aquatic life and provides water for agriculture, industry, and drinking water for millions of people downstream.

The plant discharges into the Paraíba do Sul River basin, which drains into the Atlantic Ocean. The river is a vital water source for the region, supporting ecosystems and human activities. Downstream areas include the Paraíba do Sul estuary, which is ecologically sensitive and supports diverse aquatic life, including migratory fish species. Proper treatment is essential to prevent nutrient pollution and protect coastal waters.