Making The Invisible Visible Friday, March 18, 2022 Water, arguably one of the most important natural resources on the planet, abundant yet lacking at the same time. World Water Day is on 22 March every year. In 1993, the United Nations started this movement to help people understand the importance of sustainable management of fresh-water resources. World Water Day is closely tied to Sustainable Development Goal (SDG) 6: water and sanitation for all by 2030 which is one of the main focuses.