Find out more about our mains replacement programme

You can contact us using the following methods:

Online

Email us

Want to speak to someone in person?

Please call our Customer Centre on 0845 641 0011 , open weekdays from 8am to 8pm and Saturday from 8am to 1pm (Minicom: 0845 7200 899).

If you are trying to contact us from outside the UK, please call
+44 1793 366011.

To help us continually improve the quality of our service we record all calls.

By post

Victorian mains replacement
Thames Water
PO BOX 286
Swindon
SN38 2RA

We aim to respond to all letters within ten working days or less.


Works programme

Find out if we're planning works in your area

Use our easy-to-use online search facility
 

How it's done

Mains replacement

We use four methods to replace our mains

Re-plumbing London

Pete Cotton, Thames Water engineer

Watch a short film on our mains replacement