Wastewater | Dwr Cymru Welsh Water
Dwr Cymru Welsh Water

Monday, 17th February

With flooding still affecting many communities in Wales and Herefordshire, we are experiencing high volumes of calls due to the high winds and heavy rain and our crews are extremely busy.

Here are the organisations you may need to contact:

Natural Resources Wales - 0800 80 70 60 (24 Hours) - if the flooding is coming from a watercourse (such as a stream) that is about to or has burst its banks.

Your Local Council – if you suspect the flooding is resulting from rising groundwater or surface water run off.

Welsh Water Sewerage Services & Emergencies - 0800 085 3968 (24 hours) or report an issue via a webform – for flooding inside your property caused by a blocked or overloaded sewer.

My Wastewater Service

Our sewerage systems collect domestic wastewater from drainage outlets around your home and carry it through a network of underground pipes to our treatment works. Here the effluent is cleaned and returned to the environment.

In some areas these sewers carry wastewater and rainwater in one pipe; combined sewers, and in other areas they carry rainwater and wastewater in separate pipes; separate sewers.

In the eyes of our customers a good sewerage system should be “out-of-sight and out-of-mind” and this is the service that Welsh Water aim to provide 24 hours each day and 365 days a year.

However, sometimes blockages and other faults occur, which we aren’t able to prevent and we need your help to tell us about these.

Occasionally these faults will occur on parts of the drainage system that you are responsible for and it’s important that you understand where your responsibility ends.

In an emergency, call us on 0800 085 3968


If you would like to find out more about what to do if you suspect a blockage or to find out who is responsible for a blockage, then please watch the short video below:

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