What is one of the main risks of a cross-connection?

A cross-connection is an arrangement where a potable water supply is connected to a non-potable water supply, creating a potential pathway for contamination. One of the main risks associated with cross-connections is the contamination of the drinking water supply. When there is a drop in pressure in the potable system, non-potable water can be drawn back into the clean water supply, leading to a situation where harmful substances, chemicals, or pathogens interrupt the integrity of the drinking water.

This contamination poses a serious health risk as it can lead to waterborne diseases and other health issues, which is why it is crucial for water distribution systems to have proper cross-connection control measures in place. Those measures might include backflow preventers, air gaps, and regular inspections. By understanding the consequences of a cross-connection, water distribution operators can better safeguard public health and maintain the safety of the drinking water supply.