The São Bernardo River is a significant waterway located in the state of São Paulo, Brazil. It flows through the municipality of São Bernardo do Campo, which is named after the river. The river is an important resource for local communities, providing water for various uses, including agriculture and industry. The river is part of the larger Tietê River basin and plays a role in the region's ecosystem. Efforts have been made to improve the water quality and surrounding environment, as urbanization has impacted its health over the years. Conservation initiatives aim to restore the river's natural habitat and promote sustainable practices.