Find out more about Crossness

You can contact us using the following methods:

Online

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Contact us about Crossness

Want to speak to someone in person?

Please call our Customer Centre on 0845 9200 800, 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

Crossness Sewage Treatment Works
Thames Water
PO BOX 286
Swindon
SN38 2RA

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