What is a backflow connection?

A backflow connection refers to a setup that allows water to flow back into the supply lines, which can occur due to a change in pressure within the water supply system. This phenomenon can be particularly problematic because it may allow contaminated water to re-enter the clean water supply, posing a risk to public health and safety.

Backflow connections are typically associated with cross-connections, where potable water can be mixed with non-potable sources. This makes it essential to implement backflow prevention methods to avoid such occurrences. Proper understanding and management of backflow connections are crucial in plumbing practices and system design, ensuring that water supply remains uncontaminated and safe for consumption.