Which term refers to the intentional introduction of a non-potable water source to a potable supply?

The term that refers to the intentional introduction of a non-potable water source to a potable supply is known as a cross-connection. A cross-connection occurs when there is a direct link between a potable water system and a source of contamination or non-potable water, which can compromise the safety of the drinking water supply.

Understanding this concept is crucial for maintaining the integrity of water supplies, as cross-connections can lead to serious health risks if contaminants from non-potable sources enter the potable system. Proper plumbing practices and regulations are in place to prevent such occurrences, and monitoring for cross-connections is an important part of water quality management.

While backflow, contamination, and pollution relate to water quality issues, they differentiate from cross-connection in key ways. Backflow occurs due to a change in pressure that allows water to flow in the opposite direction, potentially causing contamination but not necessarily involving an intentional connection. Contamination broadly refers to the presence of harmful substances in water, while pollution is more focused on the degradation of water quality due to various pollutants. Thus, the specific act of creating a cross-connection is what designates the appropriate choice in this context.