ETE Guaraniacu Wastewater Treatment Plant - Guaraniaçu, Paraná, Brazil

ETE Guaraniacu is a municipal wastewater treatment plant located in Guaraniaçu, a city in the state of Paraná, Brazil. The plant serves a population of approximately 3,432 residents, reflecting its role in managing domestic wastewater for this inland community. The plant provides secondary treatment, which is the standard biological treatment level required under Brazilian regulations (CONAMA resolutions) for urban wastewater. This process typically involves biological degradation of organic matter, reducing pollutant loads before discharge. The plant handles an average daily flow of about 749 cubic meters, indicating its capacity to meet the needs of the local population. The treated effluent is discharged into nearby watercourses that ultimately drain into the Paraná River basin, a major hydrological system in South America. This discharge contributes to the overall water quality of the region's rivers and streams, which support diverse aquatic life and are used for downstream water supply and recreation.

The plant discharges into local streams that are part of the Paraná River basin, one of the largest river systems in South America. These waters flow through agricultural and forested areas before reaching the Paraná River, which eventually empties into the Río de la Plata estuary. The region's aquatic ecosystems support fish species and provide habitat for migratory birds, making proper wastewater treatment essential for maintaining ecological balance.