Therefore, this research aims to seek data from the development of research on rainwater harvesting in Brazil.This article presents a literature review of scientific studies that have been developed in Brazil regarding rainwater usage in buildings.Besides that, it is necessary to considering other potential benefits associated to the rainwater harvesting in buildings .
Therefore, this research aims to seek data from the development of research on rainwater harvesting in Brazil.This article presents a literature review of scientific studies that have been developed in Brazil regarding rainwater usage in buildings.Besides that, it is necessary to considering other potential benefits associated to the rainwater harvesting in buildings .Tags: Multiplying Decimals Problem Solving5 S Of A ThesisColumbia Mba Essay QuestionA2 English Literature Comparative Essay Mark SchemeWhat Is A Dissertation For A PhdGood Thesis Statement Bilingual Education
With the continuous urbanization process, larger drainage systems are required , which increasingly interferes with the natural cycle of water.
The main impacts of urbanization on the water cycle are the increase in runoff and the anticipation of peak flows, the reduction of evapotranspiration and groundwater quantity supply, and the deterioration of surface water quality .
In addition, the concern about water shortage is a target for studies all over the world, in local level [4,5,6], mostly in regions that already suffer from lack of water, and in global level [7,8,9,10].  demonstrated that while water consumption increased fourfold in the 20th century, the population suffering from water scarcity rose from 0.24 billion (14% of the world population) in the 1900s to 3.8 billion (58%) in the 2000s.  pointed that almost 80% of the world population is exposed to high levels of threat to water safety.
Another issue is about the leakages from the piping systems in cities.
Among such alternatives there is the use of smart meters, increase and maintenance of permeable areas and the use of decentralised water systems , such as rainwater harvesting systems.
The great climatic differences all over Brazil hinder the water management.
The literature review was based on a strategy that defined the main subject through the site to be investigated (buildings), the intervention made (the rainwater usage), and the expected result (the influence of intervention on the consumption of water).
Through this strategy, the key question to be investigated was: “What is the potential for potable water savings through the installation of rainwater harvesting systems in buildings? First, a portfolio of studies related to rainwater use system was obtained from CAPES (an agency of the Brazilian government for postgraduate studies), which keeps a website with doctorate’s theses and master’s dissertations published in Brazil, covering a period of ten years (2007–2017).
Even though there are records of rainwater harvesting over thousands of years , new technologies for rainwater harvesting systems in buildings have been subject of research in many countries in the lasts decades.
One of the main reasons for the adoption of rainwater harvesting systems in buildings is the potential for potable water saving by using rainwater for non-potable water.