Sewer flooding
Sewers are the responsibility of Thames Water.
Sewer flooding can occur due to sewer blockage or collapse, or an increased flow and volume of water. If this overwhelms the sewer's capacity, water will not to be able to enter or will be pushed out. Where sewer outfall points are either blocked or submerged due to high water levels, water can back up in a sewer system and cause flooding.
- If you think there is a blockage in the sewer, report it to Thames Water
- If the flooding is coming from inside your property (i.e. out of your sink, toilet, or shower) then call Thames Water on 0800 316 9800
- If the flooding has cleared, please complete Thames Water’s sewer flooding questionnaire as this is the only way they prioritise any longer-term work which may be needed
Sewer flooding can often be seen as surface water flooding and so it may not be clear where it originates from. In this case, report the flood to us.
Report a flooding incident to us
Water supply pipes
Unfortunately, even with supply pipes there can be leaks and occasionally more serious bursts.
Visit Thames Water’s website for the following:
Page last updated: 08 June 2023
