Backflow is a term in plumbing for an unwanted flow of water in the reverse direction. [1] It can be a serious health risk for the contamination of potable water supplies with foul water.

Backflow occurs when water flows in the reverse direction from its intended path, potentially allowing contaminated water to enter potable water supplies. This phenomenon poses significant health risks …

Apr 11, 2025 · Backflow occurs when water flows backward through your plumbing, potentially contaminating your home’s drinking supply. Your plumbing system is designed to deliver clean water …

Without proper backflow protection, disease and other pollution and contamination will be transmitted to occupants and no one will be safe. This chapter covers identification of nonpotable water, backflow …

Backflow occurs when water flows in the opposite direction through your plumbing, potentially contaminating clean water with dirty water. Backflow can cause serious health and safety issues, …

Feb 19, 2025 · Backflow occurs when the normal flow of water in a plumbing system is reversed, allowing non-potable (contaminated) water to enter the clean water supply. This can introduce …

Jan 29, 2025 · Backflow is the undesirable reversal of the flow of water or other substances from a private plumbing system into the public water supply. This can occur in any system where there’s a …

When these situations occur, conditions are present that can allow the backflow of pollutants or contaminants into the water system and threaten the purity of our drinking water system. What is …

Aug 4, 2025 · Sometimes, water from private plumbing can flow back into public water systems, which is known as backflow. To prevent this, some customers must install and maintain backflow prevention …

But what exactly is backflow? Backflow is the unwanted reverse flow of fluids, gases, or other substances in a plumbing system due to a backpressure or a backsiphonage situation.