ETE Guarana Wastewater Treatment Plant, Aracruz, Espirito Santo

ETE Guarana is a municipal wastewater treatment plant located in the Guarana district of Aracruz, in the state of Espirito Santo, Brazil. The plant serves a small population of 859 residents, reflecting its role in a rural or peri-urban community. It operates under Brazil's national environmental regulations, which require secondary treatment for discharges into sensitive water bodies. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. Secondary treatment meets the minimum requirements for inland discharge under Brazilian Resolution CONAMA 430/2011. The plant's discharge volume is approximately 193 cubic meters per day, indicating a modest flow consistent with its small service population. The treated effluent from ETE Guarana enters local streams that drain into the Atlantic Ocean via the coastal watershed of Espirito Santo. The region's coastal ecosystems, including mangroves and estuaries, are ecologically sensitive and benefit from adequate wastewater treatment. The plant's inland location, over 10 km from the coast, reduces direct marine impact but still influences downstream water quality.

The plant discharges into small watercourses that flow toward the Atlantic coast of Espirito Santo, part of the Southeast Brazil coastal drainage system. These streams support diverse aquatic life and are important for local fisheries and mangrove ecosystems. The region's tropical climate with high rainfall can increase runoff and pollutant transport, making consistent secondary treatment critical for protecting downstream habitats.