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Water resources are natural resources of water that are potentially useful for humans, for example as a source of drinking water supply or irrigation water. These resources can be either freshwater from natural sources, or water produced artificially from other sources, such as from reclaimed water or desalinated water (). 97% of the water on Earth is salt water and only three percent is fresh ...
[9] Fresh water resources are unevenly distributed in terms of space and time and can go from floods to water shortages within months in the same area. In 1998, 76% of the total population had a specific water availability of less than 5.0 thousand m 3 per year per capita.
Most water in Earth's atmosphere and crust comes from saline seawater, while fresh water accounts for nearly 1% of the total. The vast bulk of the water on Earth is saline or salt water, with an average salinity of 35‰ (or 3.5%, roughly equivalent to 34 grams of salts in 1 kg of seawater), though this varies slightly according to the amount of runoff received from surrounding land.
Out of all the water on Earth, saline water in oceans, seas and saline groundwater make up about 97% of it. Only 2.5–2.75% is fresh water, including 1.75–2% frozen in glaciers, ice and snow, 0.5–0.75% as fresh groundwater and soil moisture, and less than 0.01% of it as surface water in lakes, swamps and rivers.
Water is a basic need of life and at present an estimated one billion people do not have access to safe drinking water, and even more have inadequate sanitation. [5] Global institutions, including the UN, warn of the impact of a growing global population and the effects of climate change on the ability of people to access freshwater. [3]
It spews water so fresh that people here call it nectar. The bottles, filled with a whoosh of this natural mineral water, are labeled, packed into cases and placed inside a truck for a long ride.
Water: The Fate of Our Most Precious Resource. Mariner Books, 2001. ISBN 0-618-12744-5. Idaho Department of Water Resources: Water Rights Primer; Nevada Water Law Overview; Frequently Asked Questions Concerning Water Rights in New Mexico; Water Rights in Oregon; Information Pertaining to Water Rights in California; United Nations General ...
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