Contact the Wholesale Service Centre
The office hours for our Wholesale service centre are 8am to 6pm, Monday to Friday. However we are available for emergency issues out of hours by dialling the number below, although this is only if you are a business customer who uses 50ML of water a year.
You can get in touch by emailing us at firstname.lastname@example.org
Write To Us
Due to the current situation with Covid 19 we ask if you are sending correspondence by mail you also send it via email.
Wholesale Service Centre
Dwr Cymru Welsh Water
PO Box 3164
Please contact us on 0800 260 5053 (only if you are a business customer who uses 50ML of water a year).