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 or a NAV.
You can get in touch by emailing us at firstname.lastname@example.org.
Write To Us
If you are sending correspondence by post, where possible can you also please 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).