The role of water in an ecosystem is manifold. Like air,sunlight and food, without water, there would be no life on planet. Water links and maintains all ecosystem on the planet. The role of water in the ecosystem is to provide the lifeblood of the community. The main function of water is to enhance the plant growth, provide a permanent dwelling for species that live within it, or provide a temporary home or breeding ground for multiple amphibians, insects and water-birthed organisms, and to provide the nutrients and minerals necessary to sustain physical life. As nature's most important nutrients, people need water to survive. Water helps to transport oxygen, minerals, nutrients and waste products to and from the cells. The digestive system needs water to function properly, and water lubricates the mucous layers in the respiratory and gastrointestinal tracts. Without of calories, water serves as the medium for the metabolic functions and other chemical reactions that produce energy in the body. Water regulates body temperature and serves as the space between spinal cord and the brain and between the joints in the skeletal system. In human and animal biology, water is used for transport, excretion, chemical reactions and many other processes. For the environment, water helps to restore a more natural flow regime to rivers, creeks and wetlands and also maintain a healthy, productive,and resilient river system for the benefit of plants, animals and people. Water plays an important role in  plant production- some seeds are dispersed by water. It also provide a habitat for different animals and plants and is important for photosynthesis.