A system for implementation or de-pollution and revitalization of artificial or natural lakes, wherein the system is provided with modulation in the artificial or natural lakes, by means of insertion of dividing walls made of vinyl curtain, land dykes, concrete walls, or any waterproof material, dividing the artificial or natural lake in isolated places, said system comprising said dividing walls, which form modules, said dividing walls being fixed to bottom of the artificial or natural lake without leaving any gaps or openings, and said dividing walls are above water level of said lake, so there is no contact between water of each module, wherein each module can be used for different activities of at least, one of bathing, water sports, fishing, wherein water of the artificial or natural lake is de-polluted through a mobile treatment unit conditioned into containers.