Pure Aqua, Inc. designs and manufactures water treatment systems in addition to seawater reverse osmosis systems. This commercial seawater RO machine was completed in March 2013 and sent to Singapore to treat seawater and make it consumable. The machine sent to Singapore was created to treat water of about 40,000 ppm TDS and produce 4,700 gpd. Prior to being treated in the reverse osmosis portion the water being treated goes through a multi media filter in order to aid the process. For more information click here: http://www.pureaqua.com/sea-water-reverse-osmosis-systems.html