It is also called drinking water
It must be clean, so we can drink it.
It contains very little salt.
You can find it in rivers and streams.
You can find it in aquifers.
It contains a lot of salt.
You can't use it for watering plants
Ice and snow.
You can find it in seas and oceans.
You can desalt it in desalination plants.
You can't use it for drinking.
