When considering threats to national security, rivers, lakes, and glaciers are often not included. Lack of water, on the other hand, is becoming a threat to the security of many countries in a way that is not usual and is not well understood. There are threats to national security from non-military sources, such as climate change, which endanger people's lives and the stability of states. Climate change, resource scarcity, communicable illnesses, natural disasters, illegal immigration, food insecurity, narcotics trafficking, and transnational criminality. Many of these threats manifest on a worldwide scale, making individual efforts futile. To stop these threats, we need political, economic, and social changes, as well as the use of armed force by the people. Non-traditional security threats are often multinational in origin, perception, and effects. Political and economic concerns, rather than interstate competition or alterations in the balance of power, are often the driving forces behind these events. Non-traditional security threats include a lack of resources and migration that doesn't follow the rules. Both of these things can lead to social unrest and political instability. Human meddling with the delicate natural order often causes other risks, like climate change, which can have devastating effects on nations and people and can be difficult to reverse. Most countries' efforts to address these issues on their own fall short, calling for international and regional collaboration. In this paper we tried to show how water affects the national security of India.