neoperl - flow, stop and go
Water-stressed cities
tokyo water stress
Tokyo

Six of the world's 20 most water-stressed large cities are in China

The more people live in a city (with its water sources remaining unchanged), the more likely water stress is to occur.
 

City Country
Tokyo Japan
Delhi India
Mexico City Mexico
Shanghai China
Beijing China
Kolkata India
Karachi Pakistan
Los Angeles United States
Rio de Janeiro Brazil
Moscow Russia
Istanbul Turkey
Shenzhen China
Chongqing China
Lima Peru
London United Kingdom
Wuhan China
Tianjin China
Chennai India
Bangalore India
Hyderabad India


Source: http://www.sciencedirect.com/science/article/pii/S0959378014000880