Contact Developer Services
Contact us online
If you'd like to get in touch with us, we have a dedicated help desk to answer your questions and offer advice.
The best way to contact us is using our enquiry form.
If you're contacting us about an application, please have your DS reference number ready.
Call us
Our lines are open from 8am to 5pm, Monday to Friday. We're closed on bank holidays.
If your hearing or speech is impaired, you can contact us using RelayUK.
Write to us
Thames Water Developer Services
Clearwater Court
Vastern Road
Reading
RG1 8DB
Complaints
We try our best to get things right first time. However, we realise that we occasionally don’t achieve the high standards we set ourselves.
If you’re concerned about any aspect of our service, please call us on the number above to discuss the matter.