ETE CAMPO DO GALVAO Wastewater Treatment Plant, Guaratinguetá, São Paulo

ETE CAMPO DO GALVAO is a municipal wastewater treatment plant located in the Campo do Galvão neighborhood of Guaratinguetá, in the state of São Paulo, Brazil. The plant serves a population of around 10,500 residents, placing it in the small-to-medium agglomeration category for Brazilian wastewater infrastructure. As a facility in São Paulo state, the plant is subject to Brazilian environmental regulations, including CONAMA resolutions and state-level water quality standards. For agglomerations of this size, secondary treatment is typically required to reduce organic load and suspended solids before discharge. It is expected to meet the regulatory standards for its scale. The plant discharges treated effluent into the local watershed, which ultimately drains into the Paraíba do Sul River basin. This river is a critical water source for the region, supporting agriculture, industry, and drinking water supplies downstream. The plant plays a key role in protecting water quality in this ecologically and economically important basin.

The plant's treated effluent flows into the Paraíba do Sul River basin, which drains through the Vale do Paraíba region and eventually reaches the Atlantic Ocean near Campos dos Goytacazes. The Paraíba do Sul is a vital waterway for southeastern Brazil, supporting diverse aquatic life and providing water for millions of people. The plant helps mitigate nutrient and organic pollution that could otherwise contribute to eutrophication and degrade downstream habitats.