What describes wastewater that can flow back into a potable water system?

The term that accurately describes wastewater that can flow back into a potable water system is cross-connection. A cross-connection occurs when there is a direct link between potable water and any source of contamination, such as wastewater. This situation presents a risk of pollution entering the drinking water supply, especially if there is a sudden drop in water pressure or backpressure. It's crucial to identify and eliminate cross-connections in water supply systems to protect public health and maintain the integrity of drinking water.

Backflow, while related, specifically refers to the unwanted reversal of flow in a piping system, often due to changes in pressure. Although backflow can result from cross-connections, the term uniquely describes the flow dynamics, not the existing connection itself. Recycling pertains to the process of reclaiming wastewater for beneficial reuse, while contamination generally refers to the presence of harmful substances within water, not the mechanism or situation of potential backflow into a potable system. Understanding these definitions is important for efficient wastewater management and ensuring safe drinking water.