Try it online
There is no need to ring and don’t forget you can tell us you are moving, set up a direct debit, pay your bill and much more online.
Busy times for our billing team, your annual bill will be with you by the end of next week.
Download a printable version of the application form.
If you are applying for this service manually please attach the relevant information to your completed application form along with payment made payable to Dwr Cymru Welsh Water (if applicable) and send to :
Dwr Cymru Welsh Water
PO Box 3146
Please ensure that you check the weight and postage costs before sending this application form. Incorrect postage costs could result in your application form being returned by the Post Office.