What is primarily affected by a backflow connection?

The safety of the potable water supply is primarily affected by a backflow connection because it can allow contaminated water to flow back into the clean water system. Backflow occurs when there is a change in pressure in the system, which can cause non-potable water to reverse its flow into drinking water supplies. This contamination poses serious health risks to consumers as it can introduce pathogens, chemicals, and other harmful substances into the potable water.

Addressing backflow concerns is crucial in plumbing systems to maintain public health and safety standards. Ensuring the safety of the potable water supply is a core tenet of plumbing codes and regulations, which mandate the use of backflow prevention devices in situations where there is a risk of contamination.