Abstract
Abstract Currently available sources of water face extreme pressures around the globe because of oblivious human activities as well as changing climate. The rainwater harvesting system (RWHS) carries a huge potential to enhance surface and groundwater resources in regions having a poor water supply. Recently, several countries have started to promote the updated implementation of such practice to tackle the problem of growing water demand. These considerations motivated our enthusiasm for looking at its current circumstances and the possibility of RWHS in the future. In this regard, the study aims to identify the evidence gap among different determinants (climate change, reliability, water quality and financial viability) intertwined with RWHS. In the paper, studies related to the significance of RWHS amidst scarcity of water around the globe, published in valued journals from 2000 to 2020, are reviewed. We found that the RWHS becomes economically viable when certain steps and risk assessment methods are executed in planning and maintaining this system. The study concludes that drinking water sufficiency is possible if a sustainable drinking water supply system is built via RWHS.
Highlights
It has been found that technological solutions like rainwater harvesting, wastewater reuse and desalination can reduce the problem to some extent, in countries with modest economical means (Elimelech )
This research extrapolates the evidence gap among different factors intertwined with Rainwater harvesting (RWH), focusing on financial viability, usefulness/reliability analysis, water quality and impacts of climate change
rainwater harvesting system (RWHS) can connect more than 40% of the yield gaps credited to water shortages under current conditions and 31% under future (2050) climatic conditions during the major growing season for maize
Summary
Being a critical and perpetual natural resource, water is essential for the health of every species on Earth, socioeconomic prosperity of a country, food production, and. On the other side, changing demographic patterns, socio-economic development, technological innovation and environmental degradation, especially climate change, are responsible for creating an acute water shortage for human life (Wu et al ) In such a situation, it has been found that technological solutions like rainwater harvesting, wastewater reuse and desalination can reduce the problem to some extent, in countries with modest economical means (Elimelech ). This research extrapolates the evidence gap among different factors intertwined with RWH, focusing on financial viability, usefulness/reliability analysis, water quality and impacts of climate change. In the process of paper selection, we set a criterion that the paper should directly or indirectly comprise any one of the five components: RWH system, financial viability, usefulness/ reliability analysis, water quality and impacts of climate change This was set with the purpose of finding the evidence gap in the reviewed papers from 2000 to 2020. Because of the variability of rainfall under a climate change situation, the rainfall harvesting units structured on the basis of the current rainfall data
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
