The ISO rating is used by some insurance companies to define the risk factors of your property. This might include information such as the distance from your house to the nearest fire hydrant or fire station. The farther away you are, the more damage will be done in the event of a fire, since it will take longer for the trucks to get to the location and extinguish the fire.
City Of Mt. Pleasant Rating
Inside the city limits of Mt. Pleasant the ISO rating is a 3.