Biggest slums of the World

5.    Orangi Town, Karachi, Pakistan

This is the largest slum in Asia and the world entirely with a population not less than 2.4 million dwellers. In their quest for clean living, the residents built their sewage systems by hand after several years of waiting for the government. This has led to a cleaner community has about 8,000 streets, and lanes in the dwelling have sewage pipes installed by residents.