Mumbai, India
We’ve seen Delhi on this list as one of the most polluted areas in the world. But Mumbai has also made the list. Mountains of garbage tower along the outskirts of the city. Luckily, the Prime Minister is attempting to tackle this problem and is implementing waste treatment plants. Some of the mountains of garbage tower up to 18 stories high.

Many locals in the area use the garbage waste dumps as scavengers to try and sell products they find. Pollution in Mumbai also stems from overpopulated highways, unpaved dusty roads, burning of garbage, and emissions from local industries (BBC).