Water is essential for our household activities, for agricultural purposes and also for industrial uses. Fresh water present is very less in the usable form, as the majority of water over the earth’s surface is salt water. The demand for fresh water is progressively increasing due to the increase in the human population. Even though been termed as a renewable resource, fresh water demand exceeds the rate of replenishment recently. The main reason can be cited as a result of pollution or declination of fresh water ecosystems. The chief resources of fresh water include surface water as found in rivers and lakes, sub-surface water, under river flow, icebergs and desalinated water.
| American Rivers A nonprofit organization dedicated to the protection and restoration of North America's rivers.
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| BPD Water and Sanitation Cluster Informal global network of business, government and civil society supporting, researching and promoting tri-sector partnerships that bring safe water and sanitation to the poor in developing countries.
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| Calfed Bay-Delta Program Focuses on the advancement of water supplies throughout California.
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| Center for Watershed Protection Provides practical and technical information for people and communities interested in protecting and restoring urban watersheds.
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| National Environmental Services Center Assists communities with their drinking water, waste water, environmental training, solid waste and utility management needs.
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| Pacific Institute Nonprofit research center dedicated to protecting our natural world, encouraging sustainable development, and improving global security.
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| The World's Water Provides water information and data and links to organizations, institutions, and individuals working on a wide range of global freshwater problems and solutions.
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| UNESCO Water Coordinates and provides information on freshwater, including scientific policies, programmes, water forums, events, photos and useful links
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| Water Environment Research Foundation Providing a balanced water quality research program addressing wastewater collection and treatment, health concerns, and watershed management.
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