A sewer backup is something that you want to avoid at all costs. Such a thing occurs when wastewater doesn't properly drain away from your home due to an obstruction or damage. This problem commonly occurs in the main sewer line that connects the house to the municipal sanitary sewers.Jan 3, 2020,
The main sewer drainpipe under your house connects all the drains in your home, such as sinks, tubs, showers, and toilets. Because the washing machine uses so much water, it can cause backups in all of your house's drains if you have a large clog.
Sewer Backup Caused by Clogs The most common type of sewer backup is from clogged pipes. The combination of toilet paper, hair, soap scum and grease (as well as a two-year-old's fascination with what will and will not flush) are common causes of sewer backups. ... A toilet used as a trash bin will clog.May 31, 2017