8-2-1: DEFINITIONS:
As used in this chapter, the following words and terms shall have the meanings ascribed to them in this section:
BACK PRESSURE: The flow of water or other liquids, mixtures or substances under pressure into the feeding distribution pipes of a potable water supply system from any source other than the intended source.
BACK SIPHONAGE: The flow of water or other liquids, mixtures or substances into the distribution pipes of a potable water supply system from any source other than the intended source, caused by the reduction of pressure in the potable water supply system.
BACKFLOW: The reversal of the normal flow of water caused by either back pressure or back siphonage.
BACKFLOW PREVENTION ASSEMBLY: An assembly or means designed to prevent backflow.
CROSS-CONNECTION: Any connection, including, but not limited to, lawn sprinkling system connections, which may allow nonpotable water or industrial fluids or other material of questionable quality to come into contact with potable water inside a distribution system, including any temporary connections, swing connections, removable connections, four (4) way plug valves, swivel change-over devices, or other similar plumbing arrangements. (1985 Code § 18-1-17; amd. 2001 Code)