The bank of screens in Ismail Aydin's Istanbul water management system control room flashes a worrying number: 29.7 percent. That is the capacity level to which Istanbul's water reservoirs have dropped after another steamy summer put Türkiye’s largest city on the edge of a potential catastrophe. Aydin does not want to sow panic and speaks in reassuring tones. The rainy season is approaching and water levels should pick up in the coming weeks.