Top 15 Dirtiest Cities in The World

02 Brazzaville, Congo

Air pollution from emissions, lack of potable water and the contamination of the city’s water from raw sewage contribute to the laundry list of health and sanitation concerns for Brazzaville, the capital of Congo. Its Mercer Health and Sanitation Index Score is 39.1. Each of these press upon the life expectancy of the local population.

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