ETE OURO VERDE Wastewater Treatment Plant, Campinas, São Paulo, Brazil

ETE OURO VERDE is a municipal wastewater treatment plant located in the Ouro Verde district of Campinas, within the state of São Paulo, Brazil. The plant serves a small population of around 1,095 residents, reflecting its role in a localized community within the larger metropolitan region of Campinas. The plant employs secondary treatment, which is the standard biological process for removing organic matter and suspended solids. Under Brazil's national environmental regulations (CONAMA resolutions), secondary treatment is typically required for urban wastewater to protect receiving water bodies. The plant's discharge volume is 151.20 cubic meters per day, indicating a modest operational scale consistent with its small service population. The treated effluent from ETE OURO VERDE is discharged into local waterways that ultimately drain into the Paraná River basin, one of South America's major river systems. This basin supports diverse aquatic ecosystems and provides water for agriculture, industry, and drinking water downstream. Proper treatment at this plant helps reduce nutrient and pathogen loads, contributing to the ecological health of the region's water resources.

The plant's discharge enters the local drainage network within the Paraná River basin, which flows through southeastern Brazil and into the Río de la Plata estuary. This basin is ecologically significant, supporting a variety of fish species and riparian habitats. The secondary treatment process reduces organic pollution, helping to maintain water quality in downstream rivers and reservoirs that are used for water supply and recreation.