S.C. Code Regs. § § 8-1401
Drinking fountain: A plumbing fixture that is connected to the potable water distribution system and the drainage system. The fixture allows the user to obtain a drink directly from a stream of flowing water without the use of any accessories. Such fixtures can be separate from or integral to a bottle filling station.
Bottle Filling Station: A type of water dispenser that is connected to the potable water distribution system and the drainage system. The fixture is designed and intended for automatically or manually filling personal use drinking water bottles or containers not less than 10 inches (254 mm) in height and is in compliance with the American with Disabilities Act (42 U.S.C. § 12101 et seq.). Such fixtures can be separate from or integral to a drinking fountain and can incorporate a water filter and a cooling system for chilling the drinking water.
Water Cooler: A drinking fountain or bottle filling station that incorporates a means of reducing the temperature of the water supplied to it from the potable water distribution system.
Water Dispenser: A plumbing fixture that is automatically or manually controlled by the user for the purpose of dispensing potable drinking water into a receptacle such as a cup, glass or bottle. Such fixture is connected to the potable water distribution system of the premises. This definition includes a freestanding apparatus for the same purpose that is not connected to the potable water distribution system and that is supplied with potable water from a container, bottle or reservoir.
S.C. Code Regs. § 8-1401