ETE Rio Pardo - Secondary Wastewater Treatment Plant in Rio Pardo de Minas, Brazil

ETE Rio Pardo is a municipal wastewater treatment plant located in Rio Pardo de Minas, in the state of Minas Gerais, Brazil. The plant serves a population of approximately 2,682 residents, making it a small-scale facility within the region's sanitation infrastructure. The plant provides secondary treatment, which is the standard biological process required for organic matter removal. Brazil's national wastewater regulations, such as CONAMA Resolution 430/2011, mandate secondary treatment for urban effluents, and this plant operates under that framework. Treated effluent from the plant is discharged into local waterways that eventually drain into the São Francisco River basin, one of Brazil's most important river systems. The São Francisco River supports diverse aquatic life and provides water for agriculture, industry, and human consumption across multiple states. Proper treatment at this plant helps protect downstream water quality and ecological health.

The plant discharges into tributaries of the São Francisco River basin, which flows northward through the semi-arid sertão region of Minas Gerais and Bahia before reaching the Atlantic Ocean. The São Francisco River is a critical water source for irrigation and drinking water, and its lower reaches support important fisheries and migratory fish species. Effective wastewater treatment helps prevent nutrient pollution and maintains the ecological integrity of this vital river system.