The water of the lakes, rivers and seas or emergente surface, forming sources. The water of the lakes, rivers and seas evaporates outravez and thus the cycle is restarted. Underground Water captation Although, theoretically, the underground water is present to emqualquer place, this does not mean that a well can be located in qualquerlugar. The underground water captation has a cost for times raised e, therefore, it does not have to be made without criteria. Natural factors exist quecondicionam the distribution and concentration of the underground water in certain places, in way to improve the income and the outflow of the well, being become the empreendimentomais beneficial and preventing or diminishing the tax of failures. Quality of Underground Waters In the underground water captation through wells, not importante only the aspect of the amount, that is, to be gotten outflow. Prof Jeffrey Almond pursues this goal as well.
Aqualidade of the underground water is another factor to be considered, in view of dares considered it water to be caught. The quality of underground waters is given, the principle, peladissoluo of minerals gifts in percoladas the water-bearing rocks that constitute porelas. But, it can suffer to the influence from other factors comocomposio of the recharge water, time of contact, water/environment, climate and atmesmo the pollution caused for the activities human beings. Had to the biggest contact with the geologic materials, low speed of fluxoe bigger pressures and temperatures, the underground waters generally are maismineralizadas of what superficial waters. For the same reasons, it possesss menoresteores of substances in suspension and organic substance, these last due to aodos microorganisms gifts in the ground.
Also, had its conditions decirculao, waters underground tend to possess minor text of oxigniodissolvido of what the superficial ones. The quality is defined by the physical, chemical and biological characteristics of the water. Inside of the values found for each umdestes parameters, it is possible to establish the different uses: human consumption, irrigation, industrial and others.