What Is Backflow and Why Does It Matter?
Backflow occurs when water flows in the reverse direction within your plumbing system—allowing contaminated water to enter the clean water supply. This can happen due to changes in water pressure, such as when a main line breaks or a fire hydrant is used nearby. Contaminants like fertilizers, chemicals, and bacteria can then make their way into your home’s drinking water.
To prevent this, backflow preventer devices are installed at key connection points in your plumbing system. These mechanical valves ensure water flows only one way—from your property to the city supply—and never back into it.
