Don't let admin drain your day. Direct Debit keeps it flowing.
Set up in minutes for your chance to win £500 account credit
Don't let admin drain your day. Direct Debit keeps it flowing.
Set up in minutes for your chance to win £500 account credit
Win £500 in our Direct Debit prize draw
Set up your Direct Debit between 28 October and 9 December 2025, and you’ll automatically be entered into our £500 account credit prize draw. Your entry will be automatic once you complete the Direct Debit form on the customer portal. The winner will be selected on 16 December 2025 and notified by email. View Terms and Conditions here.
Why switch to Direct Debit?
Running a business means your time is valuable, and every minute counts. With Direct Debit, your payments flow automatically, securely, and on time, every time. No more logging in to pay, no more reminders, no more last-minute rush.
- Save time: Payments are collected automatically on the date they're due
- Stay in control: You’ll always know when your payments are coming out
- Never miss a payment: Reliable, on-time payments keep your account up to date
- Peace of mind: Simple, secure, and trusted by thousands of Castle Water customers
How to switch to Direct Debit
You'll need to log in to your customer portal to access the Direct Debit set up form
Click the 'log in' button and enter your details. If you haven't registered yet, you can create an account in just a few minutes.
Once you're logged in, navigate to 'Set up Direct Debit'. The form is straightforward and only takes a few minutes to complete.
Fill in your bank details, review the information and submit the form. Your entry to the prize draw will be automatic once completed.
New to the portal?
The customer portal has everything you need to manage your business water account online. If you haven’t used it before, you’re missing out on:
- Managing your account online anytime, anywhere - 24/7 secure access to view and download bills, letters and statements
- Staying in control of your water use - submit meter readings, track usage and spot leaks early
- Getting quick support online - find answers, make new requests and track open cases with ease
