The prepared or treated potable waters, are those to which the Physicochemical treatments are applied necessary so that these obtain the conditions that determine it apt for the human consumption. Within these, it is necessary to distinguish the potable ones prepared, that are those that comes from a spring or pick up and has been put under treatment so that they are potable, thus losing, if it they had, the qualification of spring water or natural mineral water; and those of public supplying prepared, that comes from the normal systems of supplying to populations (waters-treatment plant) or faucet.