ETE Antonio Joao II Wastewater Treatment Plant, Antonio Joao, Mato Grosso do Sul

ETE Antonio Joao II is a wastewater treatment facility located in the municipality of Antonio Joao, in the state of Mato Grosso do Sul, Brazil. The plant serves a small population of 21 residents, reflecting its role in a rural or small community setting. It is situated in the Centro-Oeste region, near the border with Paraguay. The plant provides secondary treatment, which is the standard biological treatment process required for municipal wastewater in Brazil under national regulations. Secondary treatment typically involves biological degradation of organic matter, reducing biochemical oxygen demand (BOD) and suspended solids. The plant discharges a daily volume of 12.86 cubic meters of treated effluent. The treated wastewater from ETE Antonio Joao II is discharged into local water bodies that eventually drain into the Parana River basin, one of the major river systems in South America. The Parana River flows southward, forming part of the border between Brazil and Paraguay, and ultimately reaches the Rio de la Plata estuary. The plant's operation helps protect local streams and the broader watershed from untreated sewage pollution.

The plant discharges into local watercourses that are part of the Parana River basin, which drains into the Rio de la Plata estuary. The region's watershed supports diverse aquatic life and is important for local agriculture and communities. Proper treatment helps prevent nutrient loading and pathogen contamination in these sensitive freshwater ecosystems.