Manage your account online

Let us know about your move whether you're a new customer and need to set up an account, a current customer moving home within our region, or you're moving out of our area altogether.

Tell us you're moving

If you’ve changed your name or any of your details are wrong on your bill, please contact us.

If you’re granted power of attorney, please send us a copy of your solicitor's letter. Please include any other supporting documents, including your name and the account number for the affected account.

Address the envelope to:

Thames Water
PO BOX 286
Swindon
SN38 2RA

We’ll then update the account details.

We have specific guidance to help you

We’re changing our password policy to make your online account even more secure. Because of this, we may ask you to set a new, stronger password when you’re logging in. If you’re not prompted to update your password, you don’t need to worry.

Make sure your new password is between 8-16 characters and contains 3 out of 4 of the following:

• Lowercase letters
• Uppercase letters
• Digits (0-9)
• One or more of these symbols: @ # $ % ^ & * - _ + = [ ] { } | \ : ' , ? / ` ~ " ( ) ; .

We’ll only prompt you to update your password when logging in if it’s needed for your account. If you don’t get a prompt to update your password then there’s nothing to worry about.

To re-register, you just need to confirm your email address and reset your password. To do this, please log in with your current email address and password. You'll receive a confirmation email with a link to choose a new password. Once you’ve done this, you’ll have re-registered.

Once you’re logged into your new account, head to the ‘Billing and History’ section to see your letters and bills for your current property.