World Water Day is held annually on 22 March as a means of focusing attention on the importance of freshwater and advocating for the sustainable management of freshwater resources. An international day to celebrate freshwater was recommended at the 1992 United Nations Conference on Environment and Development (UNCED). The United Nations General Assembly responded by designating 22 March 1993 as the first World Water Day.
Each year, World Water Day highlights a specific aspect of freshwater. In 2015, World Water Day had the theme “Water and Sustainable Development”, in 2016 “Water and Jobs,” and in 2017 the theme will be “Water and Wastewater”. Under the theme “Water and Wastewater”, the year 2017 provides an important opportunity to consolidate and build upon the previous World Water Days to highlight the symbiosis between water and wastewater in the quest for sustainable development.