• If a customer has a blockage, it is important to check it out because waste water can back
up from the toilet or sink and flood the home.
• They must check with their neighbours if possible to find out if any blockage or flooding is affecting
their home as well and follow one of the points below:
– If the blockage is on the ground floor (such as the ground floor toilet, manhole or gulley)
they should call Welsh Water on 0800 085 3968.
– If neighbours’ homes are also affected, they should call Welsh Water on 0800 085 3968.
– If the blockage is just in their home, they need to make every effort to clear it using a
plunger. If they are unable to clear the blockage they should contact us. If we clear any
blockage and see that the blockage was caused by misuse then we will recharge them for
the cost of the work.