The World Water Day (WWD) was observed globally on 22 March 2017 with the theme why waste water? The year’s theme for the World Water day focuses on wastewater and ways to reduce and reuse as over so percent of all the wastewater. The theme highlights that wastewater flows from homes, cities, industries, and agriculture to nature. The theme seeks to improve the collection and treatment of wastewater and safe usability of the same.