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Because 97 % is salt water.

And of the 3 % mentioned a good bit is ice and we're busy poulting the rest.

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15y ago

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If all the water on earth is represented by 1000-L tank how many millilitres of that would represent potable water?

If all the water on Earth is represented by a 1000-L tank, only about 2.5% of that is freshwater, and only a small fraction of that is accessible and safe for drinking (potable water). This amounts to roughly 25 L of freshwater, but only about 1% of that is readily available for human use, which is approximately 0.25 L or 250 mL. Therefore, in this analogy, potable water would represent about 250 mL of the 1000-L tank.


Why should the desalination plant be built?

Because only three percent of the world's water is potable. And with man-made pollution that number is going down.


How much of the worlds water is clean and drinkable?

as per findings only 3 % of the total available water in earth is drinkable. 97% is either seawater or non potable


Which inner planets are 70 percent covered with water?

Only the earth.


Can cement-lined cast iron pipes be used as potable water supply or as drain pipes only?

Cememt lined CI is used for potable water systems


Is it safe to drink non potable water?

No, it is not safe to drink non-potable water as it may contain harmful contaminants that can make you sick. It is important to only drink water that is safe for consumption.


What is portable water?

A potable water contains not only water but also several minerals[mg,fe,cu,etc.]in actual amount & many helpfull microorganism.A potable water recognished as safe to drink.


What percent of all the water on the planet is fresh water?

Please rephrase - question does not make sense


What planet does have 71 percent of water?

Earth. That's only on the surface of course.


What percentage of our planet is covered with water?

Not very much, really. If all the water on or in Earth were gathered together, it would be enough to make a "drop" about 680 miles in diameter. That sounds like a lot, but the Earth itself is about eight thousand miles in diameter... so even by volume, water is less than 0.1% of the Earth, and by mass it's even less (since most of the Earth is either rock or metal, both of which are heavier than an equivalent volume of water).


Is the earth mostly land or water?

By mass, the Earth is composed of mostly iron (35 percent), oxygen (30 percent), silicon (15 percent), and magnesium (13 percent). The Earth's Surface is predominantly water!The surface area of the earth is predominantly water (about 70%), and I sincerely hope this isn't a serious question...The average depth of the oceans is only about 3000 meters (0,05 % of the radius of the Earth) so most of the mass of the earth is not water.To shorten this down....the earth is mostly water.


How much per cent of the earth is covered by fresh water?

Only 2.5 percent of the earth is coverd in freash water the of is coverd in salt water(70%)