ETE Batalha Wastewater Treatment Plant, Batalha, Alagoas, Brazil

ETE Batalha is a municipal wastewater treatment plant located in Batalha, a city in the state of Alagoas, Brazil. The plant serves a population of 1,644 people, classifying it as a small-scale facility within the region's sanitation infrastructure. It operates under Brazil's national environmental regulations, which mandate secondary treatment for urban wastewater to protect water quality. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a discharge volume of 107.94 m³/day, the facility manages the wastewater generated by the local community. As a small agglomeration, it meets the treatment requirements set by Brazilian environmental authorities, which align with international standards for inland plants. The treated effluent is discharged into local water bodies that drain into the São Francisco River basin, a major hydrological system in northeastern Brazil. The São Francisco River flows eastward to the Atlantic Ocean, supporting diverse aquatic life and providing water for agriculture and human consumption. ETE Batalha plays a key role in protecting downstream water quality and the ecological health of this important basin.

The plant discharges into local streams that are part of the São Francisco River basin, one of Brazil's most significant river systems. The São Francisco River flows through the semi-arid Caatinga biome and empties into the Atlantic Ocean, supporting a variety of fish species and providing water for irrigation and drinking. The plant's secondary treatment helps reduce organic pollution, safeguarding aquatic habitats and downstream communities that rely on the river.