Abstract: A device and method providing a textured substrate member and filtration device. The filtration device has a substrate member with a textured surface and a uniform surface on a side opposite the textured surface. The textured surface includes protrusions configured to interfere with a liquid flow traversing the textured surface to remove particulates entrained in the liquid flow. When the substrate member is disposed beneath a liquid source directed over the textured surface, the textured substrate forms a gravity-fed liquid filtration system. Also, a method for filtering particulates from a liquid includes providing a substrate member having a textured surface and a uniform surface opposite the textured surface; the textured surface having protrusions; configuring the plurality of protrusions to interfere with a liquid flow traversing the textured surface and remove particulates entrained in the liquid flow; and disposing the substrate member beneath the liquid flow.