The environment of the slums, developed for the new corners from the villages, is dirty and unhealthy. Because in these slums there is no water supply or drainage and sewerage system. There is no facility of collecting water from rivers, canals, ponds or pools like villages. As a result the slum dwellers often suffer from various water borne diseases. From these slums diseases spread to other areas of the town also. But in towns purified and chlorinated water is stored in big tanks at a high level. Water is then supplied to different areas of the town through pipelines. But for excess population the stored water is not sufficient. Consequently the inhabitants of the town suffer from water shortage.
The supply of fuel is a significant problem of unplanned urbanization Previously in town also, wood and dry cowdung were used for cooking. But at present natural gas is being used. Now a day, in many countries, Bio-gas is being used for cooking. Smoke originates from both wood and dried cow dung and pollutes the air. For unplanned urbanization supply of natural gas cannot be ensured to every corner and for all the time.
Because of rapid increase of population people from villages are rushing to towns in search of livelihood. The urbanization process must be planned for them. Otherwise there will be no comfort in life of the town dwellers and the environment will be polluted day by day.
Commercial establishment of mills, factories and machineries for the production of various necessary materials for the people is known as industrialization. With the objective of industrialization various types of industries have been established in the world.