Yes it is.
Fresh water is not dirty because it is fresh and clean
No, you still get fresh water and dispose of the dirty. A closed system filters and reuses the same water.
No all that does is make the dirty water salty.
Fresh water, because aqueous solutions have depressed freezing points.
calpoda live in polluted areas
Water that you can drink
Yes, tap water is fresh, because it is drinkable and not salty. That is what is meant by fresh water.
one dirty one isn't
Fresh water tastes a little better, and is not weird tasting. Water that is over 2-3 days old can become dirty and unsafe.
donate fresh drinking water to people who does not have clean drinking water
Quick and Dirty: Brackish.
Most people were drinking beer but John was drinking water.