What is a cross-connection?

A cross-connection refers to an unprotected connection between a drinking water supply and a system that is not considered safe. This situation can lead to potential contamination of the potable water supply. For instance, if there is a physical link between the drinking water line and a source of contamination such as a sprinkler system, sewage line, or irrigation system, any backflow could introduce pollutants into the drinking water system.

The risks associated with cross-connections emphasize the importance of safeguards in water distribution systems to maintain water quality and protect public health. By understanding what constitutes a cross-connection, water operators and health officials can implement appropriate measures, such as backflow prevention devices, to prevent contamination.