India
India is home to some of the most polluted areas in the world. Over 130 cities in India have air levels below national standards, which is contributing to an array of health problems around the world. In 2019, pollution alone led to over 2.3 million premature deaths, whereas air pollution contributed to 1.6 million deaths and over 500,000 were due to water pollution.

Additionally, out of the 30 most polluted cities in the world, India was home to 21 of them. This pollution is due to vehicle exhaust, power generation, dusty roads, lack of proper water and sewage systems, and traffic, to name a few (Bloomberg).