ETE Orindiúva - Secondary Wastewater Treatment Plant in Orindiúva, São Paulo, Brazil

ETE Orindiúva is a municipal wastewater treatment plant located in Orindiúva, a city in the state of São Paulo, Brazil. The plant serves a population of approximately 5,253 people and operates with secondary treatment, which is the standard level for urban wastewater in Brazil under the National Environmental Council (CONAMA) regulations. The plant discharges a treated effluent volume of 738.18 thousand cubic meters annually, reflecting its role in managing local wastewater. As a secondary treatment facility, ETE Orindiúva employs biological processes to reduce organic matter and suspended solids, meeting the effluent quality standards set by Brazilian environmental legislation. It aligns with the typical requirements for small to medium agglomerations in the region. The regulatory framework in Brazil, including CONAMA Resolution 430/2011, mandates secondary treatment for urban wastewater to protect water resources. The treated effluent from ETE Orindiúva is discharged into a local water body, likely a tributary of the Rio Grande, which flows into the Paraná River basin. This basin is ecologically significant, supporting diverse aquatic life and providing water for agriculture and human consumption. The plant's operation helps maintain water quality in the downstream environment, contributing to the health of the Paraná River system.

The treated effluent from ETE Orindiúva is discharged into a local watercourse that drains into the Rio Grande, a major tributary of the Paraná River. The Paraná River basin is one of the largest in South America, supporting extensive biodiversity and providing water for irrigation, industry, and drinking. The plant's secondary treatment reduces organic pollutants, helping to protect downstream aquatic ecosystems and maintain water quality for multiple uses.