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

ETE Santa Olimpia II is a wastewater treatment plant located in the Santa Terezinha neighborhood of Piracicaba, São Paulo, Brazil. The plant provides secondary treatment for a small population of 116 residents, contributing to local sanitation infrastructure in the Piracicaba metropolitan region. As a secondary treatment facility, the plant meets the standard level of treatment required for municipal wastewater in Brazil, which typically involves biological processes to reduce organic matter and suspended solids. The treated effluent from ETE Santa Olimpia II is discharged into the local watershed, which ultimately drains into the Piracicaba River. This river is a key waterway in the region, flowing through the city and supporting diverse aquatic life. The plant's operation helps protect the Piracicaba River from untreated sewage, maintaining water quality for downstream communities and ecosystems.

The plant discharges into the Piracicaba River basin, which flows through the city of Piracicaba and eventually joins the Tietê River, a major tributary of the Paraná River system. The Piracicaba River supports a variety of fish species and is used for recreation and water supply. Protecting this river from untreated wastewater is critical for maintaining aquatic biodiversity and ensuring safe water for downstream users.