well like 70% of the world is water. Not all places in the world have clean water. I hope that's wat your looking for.
1%
in 123456892222
9%
the majority of the world water is salt water, and about 3% of the worlds water is fresh but 2% of that water is glaciers. so that leaves only 1% of the worlds water supply
precipitation A+
I believe the Romans and their aqua ducts.
stinky
Yes, but very slowly. For all of human history you can consider the answer as no.
MOst of the worlds water supply is contained in just 9 countries. The united states, canda , columbia, brazil, the domnincan Republic of Congo, Russia, India, China, and indonesia.
That may depend entirely on where you live. You have given us NO facts.
good style
"The Antarctic Icecap is the largest supply of fresh water, representing nearly 2% of the world's total of fresh and salt water." Source: http://www.infoplease.com/ipa/A0004674.html