The significant reduction of water flowing through the São Francisco River has prompted the Brazilian Federal Public Ministry (MPF) to take legal action against the Minas Gerais Energy Company (Cemig), the National Electric System Operator (ONS), and the National Water Agency (ANA). Filed on February 14 in the Federal Court of Minas Gerais, the civil suit alleges mismanagement of water from the São Francisco River, primarily due to the operations of the Três Marias Hydroelectric Plant, which is the first major reservoir on the river's course.

The lawsuit highlights that the current minimum water flow is insufficient to maintain the ecological balance of the river, which has far-reaching consequences throughout its basin. This inadequate management threatens agriculture, fishing, and the livelihoods of thousands of people living in the São Francisco River's influence area, indicating a severe environmental impact. The case underscores the crucial need for sustainable water management policies that safeguard both the river's ecosystem and the communities relying on its resources.

Furthermore, the MPF aims to hold accountable those responsible for the river's management, which will likely have significant implications for energy policies and environmental regulations in Brazil. The situation raises questions about the balance between energy production and ecological preservation, as well as the role of governmental agencies in regulating and ensuring compliance with environmental standards in the face of industrial demands.