What are Cross-Connections?
Cross-connections happen when a hose, pipe or a basin containing a substance other then drinking water is connected to a potable water distribution system. When this happens there is potential for backflow, or back siphonage.
The City of Charlottesville Ordinance gives these definitions:
Sec. 31-256. Definitions.
Backflow means the flow of water or other liquids, mixtures or substances into the distributing pipes of a potable supply of water from any source or sources other than its intended source.
Cross-connection means any physical connection between a potable water supply and any waste pipe, soil pipe, sewer drain or any unapproved source or system. Cross-connection includes any potable water supply outlet which is submerged or can be submerged in waste water and any other source of contamination. (Code 1976, § 29-18)
Why should I care about Cross-Connections?
Cross-Connections are very dangerous. They do not happen that often thanks to good cross-connection control and backflow prevention programs.
The following links will give you some examples of what cross-connection control programs are here to protect against: