9. Detroit, MI
Major Causes of Pollution: 3 (Automotive Industry, Abandoned Facilities, Lack of Funding for Cleanliness)
Efforts to clean up Detroit may be near hopeless. The automotive industry in the city contributes to a large amount of the pollution in both the air and water. A lot of buildings and places are also very old and abandoned leaving them to decay and pollute. Mix in the fact of the recent bankruptcy and the highest murder rate in the country then you’ll probably need a plethora of solutions before anything else moves forward.