This year's theme for World Water Day is 'Water and Sustainable Development'. The history of this celebrated day began in 1993 when the United Nations General Assembly designated 22 March as the first World Water Day. Each year since, World Water Day shines a spotlight on a different issue pertaining to water.
According to the UN 748 million people, do not have access to safe, clean drinking water. Another 2.1 billion do not have access to "adequate sanitation". The Watereuse Association Desalination Committee looks at the practicality of water desalination. Their research has concluded that "membrane desalination" is the water treatment technology of choice in the United States and around the world. While they recognized that cost is one of the most sensitive and critical aspects of any water project. They cite advances in technology that have led to the decreasing cost of providing clean water.