What is reverse osmosis water? What is reverse osmosis water? Why is EMV Citrus Zero carbonated? What makes EMV Citrus Zero taste sweet if there are no carbs? Posted by Joe Jerde on June 15, 2014 in Reverse osmosis is a process in which drinking water is purified. Tags:emv citrus zero, energy drink Share this article: About Joe Jerde I'm an entrepreneur looking forward to meeting new people and helping them become successful in building their own business!