Fire Departments across the nation are graded on different components that effect fire suppression including water supply, communications, fire department personnel, and equipment. Departments are awarded a number between 1-10, with 1 being the highest possible granted number.
Charleston Fire Dept. was awarded ISO Class 2
ISO reports that there are 48,754 fire departments in the country. Of these 132 are classified as a #1 and 1061 are classified as a #2. In Illinois, there are 2,351 departments. Of those 5 are class #1, and 77 are class #2.