Value proposition

The UK's leading independent business water supplier.

Established in 2014, Castle Water is the UK’s largest independent business water retailer, trusted by over 350,000 businesses, charities, airports, independent schools, and public bodies.

With more 5-star Trustpilot reviews than all our competitors combined, our expertise and technology combine to form an award-winning service to suit a range of requirements, and we'll fight in your corner through any supply disruptions or Wholesaler disputes.

Our team of experts will support your business to manage its water services to save money, reduce carbon emissions, be more water efficient and avoid potentially damaging leaks.

Industrial and multi-site customers enjoy simplicity, consistency, and transparency with our flexible solutions, including consolidated billing, 24/7 emergency support, and a range of bespoke additional water management, and expert trade effluent guidance and services.

We’re doing all we can to protect the environment. From installing 4,500 free Automatic Meter Reading devices, to our drought resilience project, to investing in digital customer channels, and providing free resources to help our customers to do the same.

Our Customer Service and Account Management teams are based in-house at locations across the UK, ready to support customers nationwide.

When it comes to switching water suppliers, it couldn’t be easier.

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