Effect of the degree of purity of cotton fabric on its capillary parameters is studied. Hydrophilization of the fiber surface and an increase in the capillary size are revealed to occur during the removal and decolorization of contaminants. As a rule, an increase in the surface hydrophilicity prevails over an increase in the capillary size, thus increasing the maximum height of water rise along the fabric samples. The effect of the natures of fibers and a polymer binder on the capillary properties of nonwoven materials is investigated. The nature of the polymer is shown to play a key role in the material wetting.