The moment they saw the city water tanker stop in their neighborhood, Mohammed and Nayla rushed towards it. That day, the water was free -- a rare event in Karachi, where organized gangs siphon it off to sell to thirsty residents.
In this photograph taken on August 22, 2015, Pakistani residents fill containers with water provided by the government in a slum area of Karachi.
Dig, pump, bill
In this photograph taken on August 20, 2015, a Pakistani man fills a container with water in a slum area of Karachi.