Why does my main sewer line keep clogging up?
Why does my main sewer line keep clogging up? Sewer line blockages are usually caused by a broken sewer pipe or tree roots that have grown into the pipes. Tree roots are also a common culprit busting through the pipe and growing into it, blocking the flow. It's also possible a severe clog such as years of grease buildup has blocked the pipe. Where does water go when sewer line is clogged? When you flush the toilet, water backs up into or comes up in the tub or shower. When your sewer line is clogged, the water can’t go down...