ETE Alfenas Wastewater Treatment Plant, Alfenas, Minas Gerais, Brazil

ETE Alfenas is a municipal wastewater treatment plant located in Alfenas, a city in the state of Minas Gerais, Brazil. The plant serves a population of approximately 69,075 people, placing it in the medium-agglomeration category for Brazilian wastewater infrastructure. It is situated in the southeastern region of the country, an area characterized by a mix of urban development and agricultural activity. The plant is expected to comply with Brazil's national environmental standards, which require secondary treatment for urban wastewater from agglomerations of this size. The designed capacity is 1. 00, indicating a moderate-scale facility. Brazil's regulatory framework, including CONAMA resolutions and state-level environmental permits, governs effluent quality and discharge limits. The plant's treated effluent likely discharges into a local watercourse that feeds into the Rio Grande basin, part of the Paraná River system, which ultimately flows to the Río de la Plata estuary. This downstream connection underscores the plant's role in protecting water quality in a region that supports agriculture, fisheries, and biodiversity. The plant is within 50 km of the coast, though inland, its operations contribute to the health of the broader watershed.

The plant's discharge enters local streams that drain into the Rio Grande, a major tributary of the Paraná River. The Paraná River system flows through Brazil, Paraguay, and Argentina before reaching the Río de la Plata estuary, a critical habitat for migratory fish and aquatic species. The region's watershed supports diverse ecosystems, including riparian forests and wetlands, and is important for regional water supply and agriculture. Effective treatment at ETE Alfenas helps mitigate nutrient loading and pollution that could impact downstream water quality and ecological balance.