In this paper we present a method of decontamination using microspheres and fiber optics structures with various geometries. The proposed method consists in the decontamination process at the contact surface irradiated by ultraviolet (UV) radiation during the propagation of the liquid contaminated with viruses and bacteria through the space region created between the microspheres (or fiber system). The increasing of surface contact zone irradiated by UV in such type of system strongly depends on the refractive index of metamaterial and optical properties of viruses or bacterias from the liquid. The complementary effect of decontamination depends on the evanescent zone created at interface of liquid and trapped microspheres from considered structures. In this case, during the propagation of UV wave through microspheres, a tendency of viruses decontamination along the surface system becomes possible.