**1.1 Water classification**

Water can be classified according to its source into [1, 2]:


3.Atmospheric water.

According to the field of use, the water is classified as:

1.Drinking water: for domestic consumption and for agriculture; and,

2. Industrial water: auxiliary in manufacturing processes, raw material for various industries, power generator, coolant agent, heating agent, etc.

Wastewater is water that has changed its original properties through use, in other words has been contaminated by human beings [2].
