Pure Aqua, Inc. designs and manufactures water treatment systems in addition to commercial SWRO machines. In April 2013 this SWRO machine was completed and shipped to the Philippines. It is intended to be used on seawater that is approximately 37,000 ppm. This water has to be reduced approximately to less than 500 ppm in order for it to be deemed consumable. For more information click here: http://www.pureaqua.com/sea-water-reverse-osmosis-systems.html