Switch to Direct Debit and get £50 cashback

Apply to pay for your business water by Direct Debit and receive £50 cashback*.

Choose from:


We will credit your Castle Water account with £50, or we will send you a £50 Amazon e-voucher, or we will make a £50 donation to Save The Children (Charity registered in England and Wales (213890) and Scotland (SC039570))

Direct Debit – The simple way to pay for your business water

  • You are fully covered by the Direct Debit Guarantee
  • You will pay no more than the default charges for your water services
  • Extended customer service hours Mon – Fri, 8am – 6pm
  • All our customer services are based in the UK

Apply Now


You can find your customer reference number and supply address postcode on your Castle Water invoice or on the promotional postcard we have sent to you.

*Click here for full T&Cs. Offer valid until 31 January 2019. Ref: POB50/07

Having difficulty? Please call us on 01250 718700. We’ll be happy to help.

* The merchants represented are not sponsors of the Castle Water Cashback Offer or otherwise affiliated with Castle Water. The logos and other identifying marks attached are trademarks of and owned by each represented company and/or its affiliates. Please visit each company's website for additional terms and conditions.

  • CUT YOUR COSTS

    Reduced rates and improved services.

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  • HOW TO SWITCH

    Switching is easy. Just follow these easy steps.

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  • HOW TO PAY

    Learn more about your payment options.

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