The most polluted regions are those which have huge amounts of imbalances in their natural environment. In other words a city is referred to be a polluted city when the natural environment of the city is contaminated by elements causing adverse effects.
Huge or increased of vehicles emitting toxic gases, improper use of water or other natural elements such that contamination is caused are a few reasons that cities become polluted. The high speed of life and the lifestyle today are a great cause of the polluted cities.
The list of most polluted cities in the world is a list which names the cities in various parts of the world based on the level of pollution in each.
The list does not just state the name of the city; it also mentions the type of pollutants, the source of pollution and the potentially affected population number. The city which makes to the top of the list is Life.
The city is located in China, with major source of pollution being automobile and industrial emissions.
The second most highly polluted city is also located in China and the name of the city is Tainying. The names of a few other most polluted cities in the world are Sukinda (in India), La Oroya (Peru), Dzerzhinsk (Russia), Chernobyl (Russia) etc.