When you switch to Castle Water you'll save up to 20% on your business water bills

Castle Water is helping businesses in England & Scotland save on water bills.

We’re here to provide an excellent water service for your business at the best possible price, and with more 5-star Trustpilot reviews than all other water retailers combined - our customers recommend us.

Get an instant quote

Businesses in Scotland, click here

How much will your business save by switching water supplier?

Switch for the service you need, at the price you want

Get an instant quote for all your water and wastewater services. Then our friendly UK based customer service team makes switching a breeze.

One simple bill

Our job is to let you get on with yours. One simple bill for all your water and wastewater means you can spend more time where you’re needed most. Log in to MyAccount to see everything all in one place, anywhere, anytime.


Everything you need to stay in control of your account, all in one place. Log in anywhere, anytime at castlewater.co.uk

With MyAccount you can:

  • View and download invoices
  • Submit meter readings
  • Tell us if you are moving premises
  • Update your details
  • Access a range of useful FAQs
  • Water meter locator

Flexible payment options

We offer a variety of flexible payment options to make paying your bill quick and easy.

Whether your business big or small, single or multi-site, you can choose the payment option that’s right for your current processes. From one invoice with one payment for multiple accounts, to separate invoices, to EDI billing, to simple Direct Debit payments, we've got an option to suit every business.

Switch for free water efficiency resources

We give free, practical advice to help your business use less water to become more sustainable and reduce costs.

Use our free online resources to engage with your staff and encourage cultural changes that result in less water being used.

Customers who switched to us only pay for the water they use

It’s easy to submit regular meter readings on MyAccount so your bills stay up-to-date and you only pay for the water you use.

Regular meter readings help track your water usage to improve efficiency and reduce costs, assess water efficiency measures and detect leaks early.

Plus, for every meter reading you submit, Castle Water will donate £1 to Save the Children’s Emergency Fund.

Industry leading trade effluent expertise

Trade effluent requirements can be complex. Castle Water’s dedicated, expert trade effluent team has the experience and technology required to understand it like no one else – and we make the process simple.

Get your instant business water quote!

Businesses in England

Businesses in Scotland

We’ve got more 5-star Trustpilot reviews than all other water retailers combined!