Contact us
You can set up a new account, tell us you're changing address, pay your bill, submit a meter reading and much more using our online forms.
Alternatively, please select from the options below:
Call us
Billing or account enquiries - call 0845 9200 888
Lines are open weekdays from 8am to 8pm and on Saturday from 8am to 1pm (Minicom or Typetalk: 0845 7200 898).
Water or wastewater enquiries - call 0845 9200 800
Lines are open 24 hours a day (Minicom or Typetalk: 0845 7200 898).
Email us
Use our online form to send us an enquiry or to provide feedback.
Complete our online enquiry form
Write to us
Thames Water
PO BOX 286
Swindon
SN38 2RA
We aim to respond to all written enquiries within ten working days or less.
If you're an existing customer, please quote your Thames Water account number in all correspondence. Your account number is the ten-digit reference number located at the top of your bill.
Other useful contacts
| Services for developers | 0845 850 2777 | Weekdays from 8am to 5pm |
| Leakline - report a leak | 0800 714 614 | Lines open 24 hours a day |
| Media enquiries | Visit our media section | |
| Business to business enquiries | 0118 373 8000 | Weekdays from 8am to 6pm |
| Calling from abroad | +44 1793 366 011 | Lines open 24 hours a day |
