What does backflow refer to?

Backflow refers specifically to a reverse flow condition in a plumbing system, where water flows in the opposite direction to what it is intended. This phenomenon can occur due to various factors, such as a drop in water pressure or an increase in the water supply pressure, which causes contaminated water from the system to enter the clean water supply. Understanding backflow is crucial for maintaining safe drinking water standards, as it can lead to the contamination of potable water supplies. Therefore, recognizing backflow as a reverse condition that poses potential health risks is fundamental for anyone involved in utilities maintenance and public health safety.