ETE ARRUDAS Wastewater Treatment Plant, Sabará, Minas Gerais, Brazil

ETE ARRUDAS is a major wastewater treatment facility located in Sabará, within the Belo Horizonte metropolitan region of Minas Gerais, Brazil. The plant serves a population of approximately 284,000, placing it in the large agglomeration category under Brazilian sanitation standards. Its location in the Rio das Velhas basin, a tributary of the São Francisco River, underscores its importance for regional water quality. As a large-scale plant, ETE ARRUDAS is expected to meet Brazilian regulatory standards for wastewater treatment, which typically require secondary treatment for such population equivalents. The plant operates under the framework of Brazil's National Environmental Council (CONAMA) resolutions and state-level environmental permits from Minas Gerais. Plants of this scale often employ activated sludge or similar biological treatment systems to achieve required effluent quality. The treated effluent from ETE ARRUDAS likely discharges into a local watercourse that flows into the Rio das Velhas, a major river in the São Francisco basin. The São Francisco River is one of Brazil's most important waterways, supporting diverse aquatic ecosystems and providing water for agriculture, industry, and human consumption downstream. Proper treatment at this plant is critical to protect water quality in the Rio das Velhas and ultimately the São Francisco River.

ETE ARRUDAS discharges into the Rio das Velhas watershed, a tributary of the São Francisco River, which flows through the semi-arid sertão region to the Atlantic Ocean. The Rio das Velhas is ecologically significant, supporting diverse fish species and providing water for the Belo Horizonte metropolitan area. Downstream, the São Francisco River sustains important wetlands and reservoirs, making effluent quality from this plant crucial for maintaining aquatic health and water supply.