One of the most common uses of silica sand is in water filtration, whether processing well water or filtering your tap water. Because of its uniform shape and size, silica sand is an effective filtration bed that consistently removes contaminants from water. Also, it does not degrade when exposed to acidic chemicals. Silica gravel is used as packing material in deep-water wells to increase yield from the aquifer by expanding the permeable zone around the good screen and preventing the infiltration of fine particles from the formation. Earth Minechem is the leading manufacturer and supplier of Silica Sand.