Customer Notice

Our offices and phone lines will be closed for Good Friday. Our Scotland offices and phone lines will reopen at 8am on Monday 22 April. Our England offices and phone lines will reopen at 8am on Tuesday 23 April. To make a payment, click here. If you experience an emergency or unplanned disruption to your water supply and/or wastewater service whilst we are closed, please call your Water Network Owner. You can find a list of emergency numbers here. If you experience a problem with the water pipework inside your own building/site, you should call your plumber in the first instance.

Castle Water is the UK’s leading independent business water supplier, providing water and wastewater services to hundreds of thousands of businesses, charities and public bodies in England and Scotland.

Why choose Castle Water?

  • We’ve got more 5-star Trustpilot reviews than all other water retailers combined
  • We can provide services to any type or size of business, in any location
  • We make switching easy and stress free
  • Our customer services are UK-based only
  • We provide extended opening hours, Mon – Fri, 8am – 6pm

We provide a range of services including:

  • Automatic meter reading
  • Consolidated billing
  • Flexible payment options
  • Water efficiency advice

Large and multi-site businesses

As a large or multi-site business, Castle Water can provide you with a framework of additional services through agreements with industry leading partners. To find out more about our additional services, click here.

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Request a quote today!

With Castle Water, expert advice is always on tap! Request a quote or contact us now to learn more about saving on your water costs.

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  • water efficiency switch


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  • water efficiency additional services


    We provide a range of additional services.

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  • water efficiency water efficiency


    Read our useful water saving tips.

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