The world's per capita freshwater volume is about 8,300 cubic meters, but two-thirds of it is lost in the form of floods each year. The remaining one-third is used for drinking water and irrigation. Due to the increase in industrialization and human water consumption, the current world water consumption has increased compared to 1990. Nearly 10 times. The lack of fresh water in the future is one of the constraints that constitute economic development and food production. therefore:. ['To reduce industrial water use.', 'To reduce domestic water use.', 'On the one hand, we should save water, and on the other hand, we should develop and use new fresh water resources to solve the problem of water shortage.', 'The total population must be reduced to expand per capita freshwater.']