ETE DAS ANTAS Wastewater Treatment Plant - Andirá, Paraná, Brazil

ETE DAS ANTAS is a wastewater treatment plant located in Andirá, in the state of Paraná, Brazil. It serves a population of approximately 3,265 people, making it a small-scale facility within the region's sanitation infrastructure. The plant is situated along Rodovia Melo Peixoto and operates under Brazil's national environmental regulations. The plant provides secondary treatment, which is the standard level required for municipal wastewater in Brazil under CONAMA Resolution 430/2011. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant's discharge volume of 501.12 (likely in cubic meters per day) indicates its operational scale. Treated effluent from ETE DAS ANTAS is discharged into local water bodies that eventually drain into the Paraná River basin, one of South America's major river systems. This region supports diverse aquatic life and is important for agriculture and water supply. Proper treatment helps protect downstream ecosystems and communities.

The plant discharges into local streams that flow into the Paranapanema River, a tributary of the Paraná River, which ultimately reaches the Río de la Plata estuary. The Paraná basin supports rich biodiversity, including migratory fish species and riparian forests. Effective secondary treatment reduces nutrient loading and organic pollution, helping maintain water quality in this ecologically sensitive watershed.