Day Zero Concept:
The concept of “Day Zero” has re-entered global focus as the United Nations warned that worsening climate change, groundwater depletion, and weak water governance could push many cities—including in India—towards acute water collapse.“Day Zero” refers to the point at which a city or region’s usable water supply falls below a critical threshold, forcing authorities to shut off regular tap water and supply water only through rationed emergency distribution points.The term gained global prominence during Cape Town’s near Day Zero crisis in 2018, when reservoir levels dropped to dangerously low levels.Since then, UN agencies have adopted the term to describe systemic urban water collapse, not just temporary droughts.
