5 US Cities with Cleanest Air and Water

4. Wilmington, NC

Population: 291,833

Annual Particle Pollution (2019-2021): 4.1µg/m3

Wilmington has good air quality due to its coastal location and efforts to reduce pollution. The city prioritizes water quality by conducting regular tests. In recent reports, 56 contaminants were detected in the water; however, none of them exceeded federal water drinking standards set by the EPA.