What is a backflow?

Backflow is the undesirable reversal of flow of water or mixtures of water and other liquids or substances into the distribution pipes of the potable supply of water from any source or sources. This backward flow of the water can occur when the pressure created by equipment or system such as a boiler or air conditioning system is higher than the water pressure inside the water distribution line (back pressure), or when the pressure in the distribution lines drops due to routine occurrences such as water main breaks or heavy water demand causing the water to flow backward inside the water distribution system (backsiphonage).

Backflow is a problem that many water consumers are unaware of, a problem that each and every water customer has a responsibility to help prevent.

Show All Answers

1. What is a cross connection?
2. What is a backflow?
3. What can I do to help prevent a cross-connection?