What is cross-connection control?

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Cross-connection control is essential for maintaining the safety and integrity of drinking water supplies. It refers to a system designed to prevent the mixing of potable (drinking) water with non-potable water, which can contain harmful contaminants. This is crucial because if a backflow occurs or pressure changes in a water system, non-potable water may inadvertently enter the potable supply. Cross-connection control typically involves the use of physical barriers, such as backflow preventers and air gaps, to ensure that drinking water remains uncontaminated and safe for consumption.

Other options pertain to water management but do not accurately describe the primary role of cross-connection control. Improving water pressure or increasing flow does not address contamination issues, and treatment methods focus on purification rather than the physical systems needed to prevent cross-connections. Therefore, the focus of cross-connection control specifically emphasizes the protection of drinking water from possible contamination, distinguishing it from other water system functions.

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