This Is the Filthiest City in America

If cleanliness is next to godliness, a bunch of US cities need to find religion. LawnStarter took a look at more than 300 major US metropolitan areas to figure out which ones are sparkling clean and which ones need some tidying up, factoring in nearly two dozen metrics in four main categories: pollution (air and water quality, greenhouse gas emissions, and the like); living conditions, including the share of overcrowded residences; infrastructure (think junkyards, refuse and recycling collectors, and access to public restrooms, among others); and resident dissatisfaction with all things pollution and waste. California's San Bernardino claims the dubious honor of America's dirtiest city, while Lynchburg, Virginia, is the cleanest. Here, the top and bottom 10:

Dirtiest Cities

1. San Bernardino, California (No. 1 in "Resident Dissatisfaction" category)
2. Detroit
3. Reading, Pennsylvania
4. Newark, New Jersey
5. Ontario, California
6. Phoenix (No. 1 in "Infrastructure" category)
7. Trenton, New Jersey
8. Las Vegas
9. Houston
10. Baytown, Texas (No. 1 in "Pollution" category)

Cleanest Cities

294. Fayetteville, Arkansas
295. Des Moines, Iowa
296. Sioux City, Iowa
297. Roanoke, Virginia
298. Bellevue, Washington
299. Wilmington, North Carolina
300. Pleasanton, California
301. Redwood City, California
302. Duluth, Minnesota
303. Lynchburg, Virginia

See how other cities fared here. (Check out America's most sustainable cities.)