In the field of Environmental Engineering, our attention has focused on what nature, through vegetation and its seeds (in this case Moringa), can do for the problem of water pollution in urban environments in Angola, more precisely in Luanda. The main aim of this study was to use Moringa seeds to treat wastewater from industries and households. At laboratory level, the test gave good results. Without contradiction, nature can provide many elements that can help solve urban socio-environmental problems.