Customer Notice

Our offices and phone lines will be closed on Monday 27 May for the Bank Holiday. We will reopen on Tuesday 28 May at 8am. You can still make a payment online. 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. We are licensed by Ofwat and The Water Industry Commission for Scotland (WICS).

Open water market

If you have a business in England or Scotland, you can take advantage of the open water market. With deregulation, businesses are no longer restricted to buying from local water boards or Network Owners. All businesses, regardless of size, can now choose their water and wastewater supplier – similar to the way you choose your energy or telecoms supplier. You can find out more about the open water market at: www.open-water.org.uk. The open water market applies to business customers only.

The UK’s leading independent business water supplier

Castle Water offers services to any type of business or organisation located anywhere in the UK. Unlike many water suppliers, we are not associated with any of the UK’s traditional Water Network Owners. We are wholly independent and have an excellent track record of working proactively with Network Owners to give you the right service at the right price.

Our services

As your water supplier, we provide a range customer services including:

  • Automatic meter reading
  • Consolidated billing
  • Flexible payment options
  • Water efficiency advice
  • UK-based customer services
  • Extended opening hours, Mon – Fri, 8am – 6pm

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.

Request a quote

Go to ‘Why choose Castle Water? to find out more.

  • water efficiency switch

    HOW TO SWITCH

    Switching is easy. Start saving today.

    more info
  • water efficiency additional services

    ADDITIONAL SERVICES

    We provide a range of additional services.

    more info
  • water efficiency water efficiency

    WATER EFFICIENCY

    Read our useful water saving tips.

    more info