The use of rainwater tanks has significantly improved agriculture in Brazil's Semiarid Northeast region, reducing diseases and providing water for farming. Nearly 1.2 million tanks now collect rainwater from the roofs of homes in the region, helping to alleviate water scarcity. The success of the tanks has led to a call for an increase in other water collection methods to further benefit family farming and food security in the area. The techniques and practices, including agroecology, have been disseminated by social organizations and have helped farmers in the region coexist with semiarid conditions and prosper.

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