South Carolina Camper's Handbook
Camping Tips video
These campgrounds are generally equipped with public restrooms, hot showers, and drinking water. Most of the campsites have running water, electrical hookups, and a picnic table. A few campgrounds also have coin-operated laundromats.
These “back country” campgrounds are equipped with minimal facilities, if any. Somtimes you will find nothing more than a place to pitch your tent. Other primitive campgrounds may offer drinking water and outhouses.
See https://www.sciway.net/tourism/campgrounds.html for more information about South Carolina camping.