Switch to Castle Water for award winning business water services for companies and organisations of all sizes.
More 5-star reviews than all other water retailers combined.
Switch to Castle Water for award winning service and to save up to 80% on your fixed water charges
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Switch to Castle Water for award winning service and to save up to 20% on your business water
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If you have recently moved into a premises supplied by Castle Water, please let us know as soon as you move in.
If you are already a customer and have an account for another premises, save time by logging in before completing the form. If you haven't logged in before, all you need to register is your account number, email address, and postcode.
If you have moved out of a premises supplied by Castle Water, please let us know as soon as possible.
Click below to log in to your online portal and complete our move out form.
We will update our records and issue a final bill and a refund if you have overpaid.