Water treatment system users can now select different finishes for Osmonics Inc., of Minnetonka, Minn., stainless steel membrane element housings to enhance plant aesthetics. A variety of housing finishes offer visual flexibility for plants in municipal, beverage, pharmaceutical, dairy and other industries. Some finishes for stainless steel housings have been successfully implemented on reverse osmosis systems in the field. These finishes maintain high quality and durable design features.