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In this video, although it could get the Road clean and sprinkling process is interesting, we also have to consider other more important things “save water“ ! Why save water Why to save water, mainly based on the following reasons: Scarcity of water resources: although the total amount of water resources on the earth is huge, most of it is salt water, and fresh water accounts for less than 3%. In this limited fresh water, a large part exists in the form of glaciers, ice sheets and deep groundwater, which is difficult to be directly utilized by human beings. As a result, the freshwater resources available for direct human use are actually very limited. Uneven distribution and water stress: Not only are water resources extremely unevenly distributed over time and space across the globe, but the amount of water varies greatly from season to season in the same region. This has led to severe water pressure and even water scarcity in some areas and periods. The impact of human activities: with the growth of population and the development of social economy, the demand for water resources is increasing, and at the same time, various kinds of pollution also have a serious impact on water quality. Overexploitation of groundwater leads to a series of ecological and environmental problems such as surface settlement and aquifer drainage. The discharge of industrial wastewater and domestic sewage has seriously damaged the ecological environment and water quality safety of natural water bodies such as rivers and lakes. Cycle limits: Drinking water takes a certain amount of time to cycle, depending on how contaminated it is. Generally speaking, the cycle of slightly polluted water is shorter, and the cycle of vice versa is longer. This means that once there is a serious water shortage or water pollution problem in a certain region or period of time, it is difficult to recover and solve it through natural circulation in a short time. To sum up, in order to ensure the survival and development needs of global human beings and maintain the stable and healthy operation of a sound ecological environment system (including reducing economic losses caused by water shortage and pollution), we must attach great importance to and take effective measures to save and protect every drop of precious and limited water resources !