Switch and save up to 20%

We're saving UK businesses up to 20% on their business water, with more 5-star Trustpilot reviews than all other water retailers combined.

Log in to MyAccount

Manage your Castle Water account on MyAccount.

MyAccount has everything you need to stay in control of your account, keep your bills up-to-date and your costs down, all in one place.
View and download invoices, check your balance and latest transactions, submit meter readings, find your meter and see consumption history.
Login to MyAccount

ONLY PAY FOR THE WATER YOU USE

It's easy to submit regular meter readings on MyAccount to help ensure your bills stay up-to-date. Regular meter readings help you to track water usage to improve efficiency, cut costs, assess water efficiency measures and detect leaks early.

Submit a reading

Switch and save up to 20%

There are a million and one reasons for a business to switch water supplier.

With more 5-star Trustpilot reviews than all other water retailers combined, our customers recommend us!

All it takes is one click to get started.

Get an instant quote now!

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Manage your Castle Water account, with MyAccount.

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Castle Water is supporting Unblocktober

Find out how you can improve your business water habits and support Unblocktober.

Find out more

Save water, save money

Making a few simple changes to your business will help you to save water, save money and reduce your carbon footprint. Better for you, better for the environment.

Water Efficiency Guide

Water management services

Our proactive business water services work to support efficiency, reduce costs and mitigate risk. We'll work with you to address the additional water management needs of your business and match them to our specialist partners. Our business water services include water management, wastewater treatments, trade effluent, water efficiency and emergency and contingency planning.

Our Services

Save the Children

Castle Water are proud to partner and support Save the Children’s Emergency Fund. In the critical first few hours and long after the initial emergency, Castle Water and Save the Children make sure children can get the safe, clean drinking water they need to survive.

Our Save The Children Partnership

Latest News & Blogs

The importance of flood prevention

14/10/2021

Flooding is a risk to every business, not just those...

Read more
How industrial wastewater treatment can help the environment

12/10/2021

Industrial wastewater contains high levels of contamination, including toxins, microorganisms,...

Read more
Castle Water awarded share of £36million innovation fund

1/10/2021

The funding has been provided as part of Ofwat’s £36million...

Read more
Castle Water to join Experian’s Payment Performance Data Scheme

30/9/2021

Read more
View more

News

The importance of flood prevention

14/10/2021

Flooding is a risk to every business, not just those...

Read more
How industrial wastewater treatment can help the environment

12/10/2021

Industrial wastewater contains high levels of contamination, including toxins, microorganisms,...

Read more
Castle Water awarded share of £36million innovation fund

1/10/2021

The funding has been provided as part of Ofwat’s £36million...

Read more
Castle Water to join Experian’s Payment Performance Data Scheme

30/9/2021

Read more
View more

Looking to Switch Business Water Supplier?

As a business you can now choose your business water supplier in the same way as you can choose your energy or telecoms provider.

Let Castle Water take care of all your business water and waste water requirements.

Save up to 20% on your bill with Castle Water!

Get an Instant Quote