Save up to 80% on fixed charges

We're saving UK businesses up to 80% on their business water fixed charges, with more 5-star Trustpilot reviews than all other water retailers combined.

Looking for your balance?

Log in to MyAccount

View and download invoices, check your account balance and latest transactions, submit meter readings, find your meter and see consumption history.
MyAccount has everything you need to manage your account online.
Register for MyAccount

The easiest way to pay your bill is by Direct Debit

Take paying bills off your 'To do' list. Regular Direct Debit payments help to avoid late payment charges and manage cashflow, and you'll be covered by the Direct Debit Guarantee.

Set up your Direct Debit today

Never pay your water bill in advance

Our Customer in Control plan allows you to pay for your business water and wastewater as you use them, meaning you’ll never pay in advance. And with savings of up to 80% on fixed charges, we don't just make business water better, we make it cheaper too.

Start saving

SUEZ switches over 200 UK sites to Castle Water

SUEZ now benefits from a tailored service from Castle Water including water efficiency and water management support, 24/7 emergency support, consolidated billing, cost management, and market-leading trade effluent expertise.

Read the case study

Level up your water use

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.

Get started with our free Water Efficiency Guide

Water management services

Castle Water’s additional water management services work to support efficiency, reduce costs and mitigate risk. We understand that no two businesses are the same. We can work with you to address the additional water management needs of your business, and provide proactive solutions including Contingency Planning, Water Efficiency Audits, Leak Detection and Repair, and Automatic Meter Reading.

Our Services

Latest News & Blogs

Water efficiency for the animal care industry

4/7/2022

Animal care is a huge part of UK life and...

Read more
Why it’s important to reuse water

30/6/2022

Reusing water is essential for removing environmental pressures and decreasing...

Read more
Market update – Castle Water is the only water retailer fully tackling incorrect...

1/7/2022

Data available on the MOSL website demonstrates that only Castle...

Read more
Castle Water's CEO requests remedial action on issues faced by sub-meter custome...

22/6/2022

Castle Water’s CEO, John Reynolds, has written to Ofwat, MOSL,...

Read more
View more

News

Water efficiency for the animal care industry

4/7/2022

Animal care is a huge part of UK life and...

Read more
Why it’s important to reuse water

30/6/2022

Reusing water is essential for removing environmental pressures and decreasing...

Read more
Market update – Castle Water is the only water retailer fully tackling incorrect...

1/7/2022

Data available on the MOSL website demonstrates that only Castle...

Read more
Castle Water's CEO requests remedial action on issues faced by sub-meter custome...

22/6/2022

Castle Water’s CEO, John Reynolds, has written to Ofwat, MOSL,...

Read more
View more