World Water Day

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. Each year, World Water Day highlights a specific aspect of freshwater. In 2015, the theme is "Water and Jobs;" in 2017 "Wastewater" and in 2018 "Nature-based Solutions for Water."

http://www.unwater.org/campaigns/world-water-day/en/