San Bernardino, California, has earned an unenviable title: the dirtiest city in America. According to a recent study by LawnStarter, this Southern California city topped the national list for poor cleanliness, ranking first among 303 of the largest U.S. cities analyzed.
The ranking considered factors such as pollution, living conditions, infrastructure, and resident dissatisfaction. LawnStarter explained, “We assigned a weight to each factor based on its importance and grouped them into four categories.” Data from 500 cities were initially reviewed, with 197 eliminated for insufficient information, leaving 303 for the final ranking.…