ETE TALISMA Wastewater Treatment Plant, Talismã, Tocantins, Brazil

ETE TALISMA is a municipal wastewater treatment facility located in Talismã, a city in the state of Tocantins, Brazil. The plant provides secondary treatment for a small population of 153 residents, reflecting its role in a rural or small urban community. As a secondary treatment plant, ETE TALISMA meets the basic standard for organic matter removal required by Brazilian regulations, which follow the National Environmental Council (CONAMA) guidelines. For small agglomerations, secondary treatment is typically sufficient to protect local water quality. The treated effluent from the plant is discharged into a local watercourse, likely a tributary of the Tocantins River basin. The Tocantins River flows northward through the Amazon region, eventually reaching the Atlantic Ocean near the Amazon River delta. The plant's operations help safeguard downstream aquatic ecosystems from untreated sewage pollution.

The plant discharges into a watercourse within the Tocantins River basin, a major tributary of the Amazon River system. The Tocantins River flows through the Cerrado and Amazon biomes, supporting diverse aquatic life including migratory fish species. Downstream, the river joins the Amazon delta, a vast estuary with globally significant biodiversity. Protecting this watershed from nutrient and pathogen pollution is critical for maintaining ecological balance and water quality for communities and wildlife.