ETE Santa Olimpia I - Secondary Wastewater Treatment Plant in Piracicaba, São Paulo

ETE Santa Olimpia I is a municipal wastewater treatment plant located in the Santa Terezinha de Piracicaba neighborhood of Piracicaba, São Paulo, Brazil. The plant serves a small population of 1,082 residents, reflecting its role in a localized community within the broader Piracicaba metropolitan region. The plant provides secondary treatment, which is the standard biological process for removing organic matter and suspended solids. Under Brazil's national environmental regulations, including CONAMA resolutions, secondary treatment is appropriate for small agglomerations. The plant treats an average daily flow of 242.00 cubic meters, consistent with its small service population. Treated effluent from the plant ultimately reaches the Piracicaba River, a key watercourse in the region that flows into the Tietê River, a major tributary of the Paraná River basin. The Piracicaba River supports diverse aquatic life and is important for local water supply and recreation. Proper treatment helps protect downstream water quality and ecological health.

The plant discharges into the Piracicaba River, which flows into the Tietê River, part of the Paraná River basin that drains into the Río de la Plata estuary. The Piracicaba River watershed supports diverse aquatic ecosystems and is used for drinking water supply, agriculture, and recreation. Effective secondary treatment reduces organic and nutrient loads, helping to prevent eutrophication and maintain water quality in this ecologically sensitive region.