Sewer backup describes what happens when water comes up or is pushed into your home through the pipes from sewer or drainage systems. It is a very unpleasant type of water damage because it often involves dirty water from the sewers that will not only destroy your personal property but can also impact your health because it's so unsanitary. There are several potential sources of sewer backup: Blockage of a city sanitary main: If the city main gets blocked, it may cause water to back up into your home through your pipes. Aging sewer systems that require updates or repair. Tree roots: When you have older pipes, sewer lines and water entry pipes, tree roots can find their way into the pipes and cause blockages. You can check for this problem on your own lines by having a plumber check your pipelines with a camera and do some basic preventative maintenance on your home, which we will address in a little bit. City-related pipeline issues like combined pipelines or problems in the sanita