Policy Briefs synthesize existing research knowledge on a policy or practice issue of importance.
Water is technically considered a renewable resource because it can be used over and over again and it has a rain cycle. However, it is only in the short-term that water can be thought of as a renewable resource and the sustainability of this renewable resource is questionable.ne of the main reasons that water may become a non-renewable source is the population growth. The population is expanding at a speedy rate, and this is putting enormous pressure on all our resources, even the renewable ones.
In general, water harvesting is the activity of direct collection of rainwater. The rainwater collected can be stored for direct use or can be recharged into the groundwater. Rain is the first form of water that we know in the hydrological cycle, hence is a primary source of water for us. Rivers, lakes and groundwater are all secondary sources of water.