The World Water Day 2021 ist on March 22. The day was first observed in 1993 when the United Nations General Assembly declared March 22 as World Day for Water. This day was first formally proposed in Agenda 21 of the 1992 United Nations Conference on Environment and Development in Rio de Janeiro, Brazil.
We have placed a detailed description of this event on this page: World Water Day 2020. For further information please stop by there!