The Earth is also called the “blue planet” precisely because it is made up of almost 98% water. Not all water on planet Earth is drinkable and not entirely sweet, indeed salt water far exceeds fresh water (only a scant 2%), which is divided between glaciers and underground aquifers.
But this indispensable resource for life is an asset that is unfortunately destined to progressively decrease and this is due to the pollution of the aquifers and waste. Water is therefore a resource destined to end if it continues to be used incorrectly: some believe that in just over 50 years the reserves will be exhausted.
Water must be preserved and not wasted. In Italy, an adult consumes 250 liters of drinking water every day and much of this goes to waste.