There are some things that you don’t want to see ever again after they leave your home. That is true for your garbage, and even more so for your sewage. Under normal circumstances, sewage water will flow downstream and away from your home without any problem, but sometimes a massive leak or a fire-hydrant being used could cause something called backflow. If the pressure in the water-lines is suddenly lowered, it could cause sewage water to flow backward through the pipes, in a worst-case scenario, even entering your home.
This is a major concern since sewage water can cause all kinds of ill health effects, as well as damage to your home. This is why an atmospheric vacuum breaker is essential for your plumbing system to function well. An atmospheric vacuum breaker will allow air to flow into the pipes in case of a backflow, thus preventing the sewage to travel into your home.