ETE Tabapua Wastewater Treatment Plant, Tabapua, Sao Paulo, Brazil

ETE Tabapua is a municipal wastewater treatment plant located in Tabapua, a city in the Sao Paulo state of Brazil. The plant serves a population of approximately 10,986 residents, placing it in the small-to-medium agglomeration category for Brazilian wastewater infrastructure. Brazil's wastewater treatment regulations are governed by federal standards such as CONAMA Resolution 430/2011, which sets effluent quality requirements. For plants of this scale, secondary treatment is typically expected to meet organic load and pathogen reduction standards. The plant's operational details are managed under the municipal or state sanitation framework. The treated effluent from ETE Tabapua is discharged into local watercourses that drain into the Parana River basin, one of South America's most significant river systems. The Parana River ultimately flows into the Rio de la Plata estuary, supporting diverse aquatic ecosystems and providing water for agriculture and urban centers downstream.

The plant's discharge enters local streams within the Parana River basin, which flows through southeastern Brazil and into the Rio de la Plata estuary. The Parana basin supports diverse aquatic life, including migratory fish species, and is ecologically sensitive due to agricultural runoff and urban pressures. Proper treatment helps protect water quality in this important watershed.