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. 

2017 World Water Day has the theme "Wastewater".

Globally, the vast majority of all the wastewater from our homes, cities, industry and agriculture flows back to nature without being treated or reused – polluting the environment, and losing valuable nutrients and other recoverable materials.

www.worldwaterday.org