ETE Marapoama Wastewater Treatment Plant, Marapoama, São Paulo

ETE Marapoama is a wastewater treatment plant located in Marapoama, a small town in the state of São Paulo, Brazil. The plant serves a population of approximately 2,350 residents, providing secondary-level treatment to municipal wastewater. It is situated in the interior of São Paulo, within the immediate region of Catanduva, and operates as part of the state's sanitation infrastructure. As a secondary treatment facility, ETE Marapoama employs biological processes to reduce organic matter and suspended solids, meeting the standards typical for small agglomerations in Brazil. The plant's discharge volume is recorded at 451.15 cubic meters, reflecting its scale. Brazilian wastewater treatment regulations, governed by CONAMA resolutions and state environmental agencies, require adequate treatment to protect water quality. The treated effluent from ETE Marapoama is discharged into local watercourses that drain into the Tietê River basin, a major watershed in São Paulo. The Tietê River flows through the state and ultimately reaches the Paraná River basin, which is ecologically significant for its biodiversity and role in regional water supply. The plant helps protect downstream aquatic habitats from untreated sewage.

The plant discharges into local streams that are part of the Tietê River basin, which flows through São Paulo state and joins the Paraná River. The Paraná River basin supports diverse aquatic life and is an important water resource for agriculture and urban areas. Secondary treatment reduces organic pollution, helping to maintain water quality in these downstream ecosystems.