What is the term for a direct physical connection between a potable water system and a non-potable water source?

The term that describes a direct physical connection between a potable water system and a non-potable water source is known as a cross-connection. This situation poses a risk because it can allow contaminated water from the non-potable source to flow into the clean water supply, creating potential health hazards. Understanding cross-connections is crucial for maintaining water safety and public health, as they can lead to backflow situations, where contaminated water can flow back into the potable water system.

Backflow, while related, specifically refers to the backward flow of water within a plumbing system, often as a result of a cross-connection. Vacuum pertains to a negative pressure condition that can lead to siphoning but is not the term for the connection itself. Filtration refers to the process of removing contaminants from water and does not describe the physical connection between different water sources. Recognizing these definitions helps emphasize the importance of preventing cross-connections in maintaining safe drinking water standards.