About Cross Connection
A cross connection as defined by the Environmental Protection Agency, is "any actual or potential connection between the public water supply and a source of contamination or pollution." Such cross-connections constitute a hazard to the building occupants and can jeopardize the cleanliness and potability of the public water system, in the event of a backflow or backsiphonage event.
A cross connection control program is an organized, legally implemented, and structured program to eliminate and contain the hazards to the municipal potable water supply. These programs have been implemented and are typically passed by local ordinance, and enforced by the local water purveyor and the local building department.