What is the main purpose of backflow prevention in wastewater systems?

The main purpose of backflow prevention in wastewater systems is to protect potable water supplies from contamination. Backflow occurs when there is a reversal of flow in a system, which can lead to non-potable water or wastewater entering clean water supplies due to pressure changes. This contamination poses serious health risks to consumers, as it can introduce harmful pathogens and pollutants into drinking water, rendering it unsafe for use.

Backflow prevention devices are specifically designed to maintain the direction of water flow and prevent any reverse flow, thereby safeguarding the integrity of drinking water systems. This is crucial in maintaining public health standards and ensuring that communities have access to safe, clean water. Other options, such as increasing system capacity or facilitating faster water flow, do not align directly with the primary goal of protecting public health from contaminants that may occur through backflow incidents.