The Tietê River Valley is located in the state of São Paulo, Brazil. It is known for its rich biodiversity and important ecosystems, as the river flows through various landscapes, including urban areas and natural reserves. The valley plays a crucial role in the region's agriculture and economy, supporting numerous farms and industries. The Tietê River itself is one of the most significant rivers in Brazil, stretching over 1,100 kilometers. It serves as a vital water source for cities and communities along its banks. Despite facing pollution challenges, efforts are ongoing to restore the river and improve the health of the surrounding environment.