Untitled Document At J MARK, we engineer and install water treatment systems. These systems are operating throughout North and South America, preparing water for use... in manufacturing or treating water before recycling or discharge. We treat water as a total part of your system. Since 1984, J MARK has established an enviable track record of water treatment... a storehouse of knowledge. Over the years, we have installed water treatment systems for nearly every type of application in the finishing industry. That experience has formed...