Thanks JW! The main reason we escape lots of "shit", is cause our drain pipe on the floor was plugged on the ground by hubby last year after the sewers were flooding, and we left it part way plugged "just in case". Plus all these people also have a bathroom tolite in the basement, and we don't. Sewer comes up from the bathroom tolite too if you have one in the basement.
When we moved here in 1987, there was never any trouble with sewer, then came the really big flood in 1995, and we only escaped flooding in the basement then cause we worked really hard plugging everything off good with that big flood. In 1995 there was much more pressure on the sewer as the water in the river was extremely high that year. Everybody here flooded with sewer except us. When they told us to evacuate, of course we never, we stayed and plugged everything in sight, but at the peak of the river's crest that year, a tiny pin hole had developed half way up the black pipe that carries sever from the upstairs tolite. The pressure was so great, that the sever water coming out from that tiny pin hole shot all the way across the room! Back then hubby got out a hot glue gun and blow dryer, and did an emergency repair and fix it right away!
Now the city has grown quite large since then, and there is many many homes that have been built up out of this valley where I am. They need to built more sever lifts to carry the extra waste away, and thst is the main reason I think that we get sever back up in this area these days, after a big rain storm or flood.