The report on the state of drinking water in the world indicates that more than 2 billion people have gained access to drinking water in the last two decades. This progress, although positive, is fragile and inequitable, with a quarter of the world’s population remaining on the margins. Climate change is increasing the frequency and intensity of droughts and floods, which exacerbate water insecurity, disrupt supplies and devastate communities. At the same time, rapid urbanization is increasingly straining the ability of cities to provide water to millions of people living in informal communities and slums.