A sewer choke is a blockage in a wastewater pipe. They occur when there's something inside the pipe that stops it working properly.

If the sewer block occurs on your property, clearance of the choke is your responsibility; contact your local plumber for help. 

Sewer chokes present in the form of slowly draining sinks, overflowing trap gullies, or strange gurgling noises coming from pipes. In some unfortunate cases, the first sign that you have a problem with sewer choke is when the water in your toilet bowl backs up and does not drain away.