The most obvious sign of a blockage is an unpleasant odour. Another clue is problems with your sink or bathtub drainage. When the toilet is clogged, the water in the bowl rises after flushing.

If you suspect your drain is clogged, you should first examine the area that you suspect is clogged to see if you can identify the source of the problem. The usual cause is a buildup of debris such as silt, leaves, or debris that have found there way into the pipes. This is especially common near grates and gutters. If the clog is around the drain, the cause is very likely grease buildup or grease entrapping other particles. If your inspection doesn’t reveal any obvious cause to your blocked outside drain, the blockage may be deeper inside the drainage system. You may want to lift manhole covers to see if you can identify the cause.

If the cause is a visible blockage, you can take steps to remove this yourself such as the use
of rods. If you can’t determine the cause of the blockage, it’s time to seek professional help.”

As a homeowner, you are responsible for drains within your property line, but for privately owned sewers you share with another landowner or portions of the sewer outside your property line you are not.

If you live in a rented apartment and have a problem with your drainage, you should first contact your landlord, agent, or housing association due to them being the parties responsible.

If you don’t know who is responsible for your drainage problem, contact your local water company for free advice.