Why does my toilet water backup into my shower drain?
Why does my toilet water backup into my shower drain? Basically, your toilet is trying to use a sewer line to transport water waste from your home to the underground sewer main. But because you have a clog in the sewer line, raw sewage can’t exit the home and instead backs up through other drains (in this case, the shower drain). Why do I have a clogged sewer line in my shower? The bubbling is due to air trapped in the plumbing system. Run the water in the sink closest to the toilet for about a minute. If the toilet...