From the indoor air quality to proper infection prevention or managing trash removal, creating a healthy work environment is key to supporting physical and mental well-being for building occupants.

Which U.S. cities aren’t so pristine? To find out, LawnStarter examined 20 different metrics to rank 2025's Dirtiest Cities in America. America’s 10 Dirtiest Cities:
San Bernardino, CA
Los Angeles
Detroit
Reading, PA
Ontario, CA
Newark, NJ
Phoenix
Jersey City, NJ
Las Vegas
Corona, CA

Quick Stats:
- Ten California cities tie for the worst median air quality.
- Across the cities in our ranking, an average of 13.89 percent of residents live near high-traffic roadways.
- Only 39 percent of the cities in our ranking had no water quality violations present.

Read the full story here.