The theme of this event that was streamed on Dec 4, 2021, is ‘A City and its Used Water’. Several speakers from different walks of life – residents, entrepreneurs, govt agencies, experts – talk about different aspects of wastewater. The talks cover the treatment and reuse of wastewater from the home level to the city level, its effects on human health, the role of women and the effects of our daily practices on wastewater quality. There are Countdown talks by international speakers as well!