The rapid growth of people in the city
In 2010, there are around 10,000 people live in 1 km2 in Jakarta.
My teacher assigned us a report about the effect of population growth on water availability. I never realized that Jakarta is very dense, the densest city in the world! The population in Jakarta grows very fast. At this rate of growth (3.7% per year), the population of Jakarta would double between 2000 and 2020! All of these people need water to drink.