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how many percent of freshwater is drinkable

how many percent of freshwater is drinkable

how many percent of freshwater is drinkable

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how many percent of freshwater is drinkable
how many percent of freshwater is drinkable

What Percentage of the Earth’s Water Is Drinkable?

It is a common fact that the world is covered in water. In fact, continents are like big islands in expansive oceans. About 75% of the earth is covered in water. There is no shortage of water on earth. The earth boasts of some of the largest water bodies including the oceans, lakes, and rivers that stretch across approximately two-thirds of its surface. However, despite the fact that three-quarters of the Earth are made up of water, less than 3% of the water is fresh, non-saline water. Furthermore, of the existing fresh water, not all of it is available for human consumption.

How Much Freshwater is There on Earth?

As stated above, about 2.5% of the Earth’s water is freshwater. Of the fresh water available on earth, only 31% is accessible for use. About 69% of the fresh water is in form of ice cap and glacier in places like the Antarctic and Greenland ice sheet, further reducing the quantity of the available drinking water. So, if only 31% of the fresh water is available for drinking, this means 31% of 2.5%=0.00775, which equates to less than 1%. Therefore, less than 1% of the earth’s water is drinkable. In some areas, the glacier often melts in summer to provide additional drinking water. However, the amount of water from glacier melt is not sufficient to increase the available fresh water to above 1%.

Where is Available Freshwater Stored?

Almost all the available freshwater (excluding glacier) is groundwater. The groundwater emerges and feeds the streams and saturated wetlands. It acts as a reservoir that can also be tapped for various uses including in agriculture and industries. Groundwater provides approximately 40% of the drinking water.

Another important source of drinking water is the surface freshwater. The surface water is held in lakes, rivers, dams, and streams. Although rivers and dams are critical for water supply, they contain only 1% of the freshwater. About 0.001% of the freshwater is contained in the form of atmospheric vapor, small amount considering its important function in weather. However, the atmospheric waters recycle several times in a year between the atmosphere and the earth’s surface, leading to rains and snows. The rains and snow are crucial in replenishing the surface water

How Many People Do Not Have Access to Clean Drinking Water?

Of the less than 1% of the available water for drinking, most of the third world countries do not have the needed resource to provide safe and clean drinkable water to its people. According to 2008 WHO report on Drinkable Water and Sanitation, about 885 million people, translating to an eighth of the world’s population, have no access to safe water. About 3.6 million people die annually from diseases resulting from unsafe drinking water.

how many percent of freshwater is drinkable
how many percent of freshwater is drinkable

What is the Future of Fresh Drinking Water?

Although surface water is an important source of drinkable water, surface water depends on several variable precipitation patterns, which makes it unreliable. Protecting and managing the underground and surface water is an essential task in ensuring availability of drinkable water. No one can create more water. But, by managing the water sources and distribution systems, people maximize the available water and make good use out of every drop.

Where is the Earth’s Water?

There is no shortage of water on Earth. Most of our planet is covered by water, but very little of that water is available for humans to drink.

Our “blue planet” is dominated by oceans that stretch across some two-thirds of its surface. These massive bodies of saltwater hold almost all the water on Earth.

Less than three percent of the planet’s water exists as freshwater—and not all of it is accessible for human use. These resources are mostly inaccessible for human use, though glacial meltwater is an important resource in some regions.

Earth’s freshwater resource

Almost all of the rest of Earth’s freshwater resource is groundwater. This subterranean water emerges at the surface to feed streams and saturate wetlands. Groundwater provides a critical reservoir that can be tapped for agricultural, industrial, and environmental uses as well as for drinking water supply. Today, groundwater provides an estimated 25 to 40 percent of all Earth’s drinking water. Some of the planet’s groundwater resources were created during ancient climates and are considered non-renewable water sources.

A minuscule percentage of Earth’s water

A minuscule percentage of Earth’s water is in the form of surface freshwater—even though most people get their daily drinking water from rivers or lakes. Rivers and streams, though critically important for water supply, contain perhaps one percent of this freshwater—a fraction of the amount found in lakes and reservoirs.

At any given time only about 0.001 percent of Earth’s water is in the form of atmospheric vapor—a surprisingly small number given its crucial role in weather. However, this water recycles many times per year between the earth’s surface and the atmosphere, a process that we experience as rain or snow.

how many percent of freshwater is drinkable
how many percent of freshwater is drinkable

resource: wikipedia

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