It does not have what to argue itself regarding the benefits that the water brings in general for the population, but its benefits together with the population concentration, generate many impacts to the environment, daily in periodicals can be come across with the flood news what helps in the transmissions of illnesses as leptospirose, pollution of rivers, caused for companies many times with the intention of poluir, the water this available one in the nature, but takes it with quality to all the population it is difficult, it has a relatively high financial cost and its treatment involves much complexity. Hidrolgico cycle. The water, as well as carbon, passes for a process of natural regeneration, known as Hidrolgico Cycle, that is when the water comes of the atmosphere passing for diverse phases ties its return again the atmosphere. As it shows figure 1. Figure 1-Cycle Hidrolgico.
Had access in 20 September of 2010. Available in: . Had access in 21 of September of the 2010 After water to come of the atmosphere through precipitations, a percentage of it is drained by the surface ties to arrive at a river, lake or sea, another percentage penetrates in the ground ties to arrive at a fretico sheet generating later one spring that anger to discharge in a river that goes following its passage ties to arrive at the sea, after this passage the water is evaporated, the generated vapor, forms the clouds that consequentemente and depending on the climatization rains, granizos or snows generate, this transformation provokes an atmospheric phenomenon calling precipitation and thus the clico starts again. With passing of the years, the population comes very increasing of fast form, bringing as consequence a great water consumption. But the lack of awareness and information for the population, makes with that the use irrational of the water is practised by great part of the population.