Necessary for life!
Without water, we cannot exist.
...Nearly 3/4 of your body is water-weighted. With that said, it does not mean you have to drink "clear-water" to live. Juice, milk, sodas/coffee/tea etc..Are actually mostly water..So you can live on these..But not recommended because of the junks in them--sugar
, preservatives/colorings etc..Are the bad parts, not the water part..
Water=best drink on earth.