The top 20 'dirtiest' cities in America, according to study

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LawnStarter, a lawn care provider, evaluated more than 150 of the biggest cities in the U.S., focusing on pollution, living conditions, infrastructure, and resident satisfaction. Houston topped the list of so-called dirtiest cities due to high levels of pollution, a significant cockroach problem, and greenhouse gas emissions from large industrial plants. Number two was Newark, New Jersey.

(NEXSTAR) -- One of the largest cities in the South has dethroned an urban East Coast area to become the nation's "dirtiest" city, according to a recent study.

LawnStarter, a lawn care provider, evaluated more than 150 of the biggest cities in the U.S., focusing on pollution, living conditions, infrastructure, and resident satisfaction.

The study analyzed data from various federal agencies, including the Centers for........

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