You will usually know when something has gone wrong with your drainage system because your waste will stop going away when you flush the toilet, or gullies outside overflow. Sometimes, if you have a shared sewer, which carries waste away from several houses in a row, your neighbour may know that there is a problem before you do.
The Water Undertaker, in this area Thames Water, is responsible for ensuring the maintenance, repair and clearance of all sewers within the Borough.
Thames Water has issued the following leaflet which explains the arrangements in more detail: Private Sewer Transfer Leaflet
If you have a blocked drain or sewer, in the first instance you need to try and identify where the blockage is and talk to your neighbour/s to see if they are affected. If more than one property is involved contact Thames Water customer service on 0800 316 9800 to report the problem. Thames Water will make arrangements to investigate, to see if it is their responsibility.
Drains that carry foul waste and/or surface water away from one property are the responsibility of the owner of that property to maintain, repair and unblock.
The Council may become involved with drainage issues from one property affecting another if it is an ongoing problem. You can contact the Residential Environmental Health team on 0208 487 5123 and we will advise on whether we can assist with the problem.
For more information or advice, please contact the Residential Environmental Health team on 0208 487 5123.
Updated: 27 July 2016