If you think there is a blockage or if your property has been flooded by our public sewer, we're here to help you 24 hours a day.
Please call us on 0845 9200 800 and one of our team will be here to help, 24 hours a day.
To help us continually improve the quality of our service, we record all calls.
- Textphone service for the deaf or hard of hearing
- This service is available for customers who are deaf or hard of hearing. Please note, voice calls or mobile numbers aren’t accepted via this number: 0845 7200 898.
- Available 24 hours a day.
For non-urgent queries, you can send us an email using our online form:
We will respond to your email within ten working days.
Write to us
If you would prefer to send us a letter, and if you are an existing customer, please quote your Thames Water account number (printed at the top of your bill) when you write to us at:
PO Box 286
We will respond to your letter within ten working days.