Rainwater Harvesting in Buildings in Brazil: A Literature Review

• Main Authors: Andrea Teston, Matheus Soares Geraldi, Barbara Müller Colasio, Enedir Ghisi
• Format: Article
• Language: English
• Published: MDPI AG 2018-04-01
• Series: Water
• Subjects: rainwater usage; potable water savings; investment feasibility analysis; urban flood mitigation; sustainable urban water systems; public policy; water conservation; buildings; Brazil
• Online Access: http://www.mdpi.com/2073-4441/10/4/471

This article presents a literature review on rainwater usage in buildings in Brazil. It focuses on economic, environmental and social impacts. The legislation related to rainwater harvesting—including the cities that have made such a practice mandatory—was also assessed. The literature review was based on a search strategy that uses protocols to find and select studies about the main subject, i.e., rainwater harvesting in buildings. The protocols were defined as the site to be investigated (buildings), the intervention (rainwater harvesting), and the expected result (influence on the potable water consumption). Despite the variation of water availability in the country, it was concluded that there is a high potential for potable water savings when using rainwater in buildings in Brazil. Finally, it was observed the need for financial investments in experimental research and innovation technologies in order to improve rainwater management.