Castle Water is the UK’s leading independent water retailer to business customers. All our customer services are based in the UK. We are licensed by OfWat and The Water Industry Commission for Scotland (WICS) to provide water and sewerage services. We supply hundreds of thousands of businesses, charities and public bodies throughout England and Scotland.

The water market in England is changing

From 1 April 2017, you can now pay your water and sewerage services to a single supplier. All businesses in England, regardless of size, will be able to choose their water and wastewater retailer. This is similar to the way you can currently choose your energy or telecoms retailer. This is already in place in Scotland where there has been an open market since 2008. This market change only applies to businesses and not household customers. Find out more on the Open Water website:

Managing your water

As your water retailer, we are here to take the stress out of buying water for business. Switching is easy. Our customer services are based in the UK and we do not outsource to external call centres.

8 great reasons to switch to Castle Water:

  • Low prices
  • Tailored services including meter reading and timely billing
  • Flexible payment options
  • Solutions to help manage costs including bill validation
  • Support to increase water efficiency
  • Quick quote service
    quoteFor large water users and multi-site customers we provide a dedicated account manager to help meet all of your business water needs. We also offer bespoke services including:
  • Consolidated billing
  • Expert advice on water efficiency and trade effluent, including advice on industry specific compliance & treatment solutions

Additional Services

Castle Water provides a framework of additional services through agreements with industry leading partners. We do not enter in to any contracts directly but we do provide relevant, specialised contacts for any business customers who are experiencing problems with their on-site supplies. Our additional services include:

  • Water efficiency auditing
  • Leak detection
  • Leakage repair
  • Meter installation services
  • Automatic Meter readings (AMR) & smart metering
  • Solutions for recycling and reusing wastewater
  • Consultancy & technical support
  • Design, engineering and project management
  • New connections, including large sites and multi-sites
  • Provision of private water supplies
  • Emergency provision including wholesale bottled drinking water & bulk water tankering

To find out more about our additional services, click here.


    Reduced rates and improved services.

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    Switching is easy. Just follow these easy steps.

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    Learn more about your payment options.

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