What is a common indication that backflow has occurred?

A common indication that backflow has occurred is discolored or foul-smelling water from the tap. This phenomenon occurs when water that is not treated or is contaminated flows backward into the clean water supply, bringing with it impurities, sediments, or chemicals. As a result, when individuals observe discolored water or a foul odor, it often signals that the water is no longer safe for consumption and that backflow may be the underlying cause.

This visual and olfactory evidence is important because it promotes immediate action to address the issue, as the presence of contaminated water poses health risks. Additionally, backflow can lead to problems with water quality in distribution systems, making it crucial for those responsible for monitoring water safety to recognize these signs promptly.