ISTANBUL A new scientific projection points to a critical outlook for Türkiye ’s water security, indicating that major cities such as Istanbul could experience “Day Zero” drought conditions by 2050 — the point at which tap water runs dry. The term “Day Zero” describes the day when a city’s freshwater reserves are completely depleted, leaving residents without running water. The projection stems from a recent study published in the journal Nature. Conducted by scientists from Pusan National