At Castle Water we’re committed to providing businesses with market-leading water services.

When we launched Castle Water in 2014, we had a clear vision. To create an independent water retailer providing excellent water service at the best possible price.

We're now the UK’s largest independent business water retailer, with the scale to compete nationally, and the flexibility of being independent of any network owner.

Licensed by Ofwat and The Water Industry Commission for Scotland to provide water and wastewater services to businesses, charities, and public bodies in England and Scotland, and with no ties to traditional network owners, we can fight for cost reductions while providing quality customer care.

We offer a service to suit a range of requirements, from large multi-site customers with complex needs to SMEs, start-ups, and sole traders.

As we continue to grow, we remain at the forefront of the UK water market, focused on providing all our customers with award-winning customer service.

Read our history

We're the UK's largest independent water retailer

Over 350,000 UK businesses choose us for market-leading water services

Businesses use millions of gallons of water every day; we focus on helping our customers use only what they need.

We provide free advice and practical resources to support businesses to reduce water consumption.  We can also advise on and provide additional water management services including Automatic Meter Reading (AMR), Water Efficiency Audits, Contingency Planning, Leak Detection and Repair.

Open water market

If you run a business, public body or charity in England or Scotland, you can take advantage of the open water market. With deregulation, you can now choose your water and wastewater retailer, similar to the way you choose your energy or telecoms retailer.

The UK’s leading independent business water supplier

Castle Water offers retail services to any type of business in England and Scotland. Unlike most water retailers, we are not associated with any water network owners. We are wholly independent, able to challenge network owner decisions and working proactively with them to give you the right service, at the right price.

Our services

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

  • Online account management
  • Consolidated billing
  • Industry-leading trade effluent expertise
  • Additional Water Management services
  • Flexible payment options
  • Water efficiency advice
  • UK-based customer services

Why choose Castle Water?

Save up to 80% on your fixed water charges

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