What is a Cross Connection?

A Cross Connection in a plumbing system is defined as "any actual or potential connection between a potable water system and any source of pollution or contaminate".

What is the most common form of a cross connection?

The garden hose is the most common offender as it can be easily connected to the potable water supply and used for a variety of potential dangerous applications.

What is meant by "Degree of Hazard"?

The potential of danger to public health determines the degree of hazard (minor, moderate or high) and will in turn determine the type of backflow device required for the protection of the potable water system.

How can a cross connection be protected?

Cross connections can be protected by using an Air Gap, Atmospheric Vacuum Breaker, Pressure Vacuum Breaker, Double Check Valve Assembly or a Reduced Pressure Principle Backflow Preventer.

What is a cross connection program?

This is a combined co-operative effort between plumbing inspectors, health officials and water purveyors to establish and administer guidelines for controlling cross connections and implementing means to ensure their enforcement so that the public potable water supply will be protected.