Mississippi Administrative Code
Title 33 - Public Health - Local Governments And Rural Water Systems Improvements Board
Part 212 - Regulation Governing Use, Installation And Testing Of Cross Connection Lines
Chapter 1 - Definitions
Rule 33-212-1.1 - Definitions

(a) Potable Water: Water that is fit for human consumption.

(b) Non-Potable Water: Water not fit for human consumption or of questionable quality.

(c) Cross Connection: Any arrangement of piping where a potable water line is connected to non-potable water; it may be a pipe-to-pipe connection where potable and non-potable water lines are directly connected, or a pipe-to-water connection where the potable water outlet is submerged in non-potable water. If the potable and non-potable source are separated by gate valves, check valves or devices other than the appropriate backflow preventer as outlined by this ordinance, a cross connection exists. By-pass arrangements, jumper connections, swivel or change over assemblies, or other temporary or permanent assemblies through which, or because of which, backflow may occur are considered to be cross connections.

(d) Backflow: The reversal of normal flow direction where water flows from the intended point of delivery towards the supply.

(e) Back Pressure Backflow: Backflow caused by a lower pressure in the potable supply than at the point of delivery.

(f) Back Siphonage Backflow: Backflow caused by a negative pressure in the potable supply line.

(g) District: the Pearl River Valley Water Supply District, an agency of the State of Mississippi.

(h) Health Hazard (High Hazard): Contamination with the potential to endanger the health and well being of the consumer.

(i) Non-Health Hazard (Low Hazard): Contamination that will not endanger the health of the consumer, but does not meet established water quality standards for Public Water Systems.

(j) Reservoir: means the waters of the Ross Barnett Reservoir.

(k) Reservoir Project Area: means the Reservoir and any lands or easement owned by the District, including lands or easements leased to others by the District.

(l) Owner: means the lessee of the property upon which the cross connection is located or, if the cross connection is located in a public right of way, the term "Owner" means the person or persons who are served by the water line to which the cross connection is connected.