The United Nations reports that two third of world population will face serious problems from the shortage of drinking water by 2025. Thus shortage in water supply in coming years will have a great impact on our food security, because we use major portion of water (70% of global use) for agricultural purpose. The impact of water crisis is very dangerous, because the unlimited use and pollution of water resources creates an adverse effect on our bio diversity. A strong environmental laws necessary to save the world from water pollution and water scarcity. The government can play an important role in detaining the water exploitation by the strict water policy and strong water regulation. But, instead of protecting our water resources, some industrialist nations privatize the water supply that creates water conflicts in the society. Public controls 97% of water distribution in the poor countries and private investments in water supply on these countries can have a negative impact on the living status of poor people.