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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.

compare business energy prices

With the recent rise in energy prices, now is the right time to shop around for a new provider. We're introducing our new comparison site to make it even easier for your business to find the best deals. Compare gas and electricity prices from providers you trust, in just a few clicks.

Get an instant price comparison quote

View and download letters on MyAccount

Any letters we post to you can now be viewed digitally, in MyAccount. With everything saved digitally, and all in one place, scrambling to find paper bills and letters will be a thing of the past.

Log in to MyAccount

Water is always worth saving

We've partnered with Scottish Water to help our customers to waste less water and support the 'Water is always worth saving' campaign.

Access your free water saving toolkit

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

Water management services

We understand that no two businesses are the same. We'll 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

Why we need to put the wiggle back into rivers

28/11/2023

As part of the Industrial Revolution, engineers straightened rivers to...

Read more
Switch business water safely. How to protect your business against erroneous tra...

28/11/2023

We are aware that UK businesses are being mis-sold expensive...

Read more
Castle Water pledges its commitment to the Young Person’s Guarantee

24/11/2023

Our pledge to the Young Person’s Guarantee will help us...

Read more
Team Castle Water triumphs in Business Fives Tayside Charity Football Event, as ...

22/9/2023

Castle Water, the UK’s leading independent business water retailer, emerged...

Read more
View more

News

Why we need to put the wiggle back into rivers

28/11/2023

As part of the Industrial Revolution, engineers straightened rivers to...

Read more
Switch business water safely. How to protect your business against erroneous tra...

28/11/2023

We are aware that UK businesses are being mis-sold expensive...

Read more
Castle Water pledges its commitment to the Young Person’s Guarantee

24/11/2023

Our pledge to the Young Person’s Guarantee will help us...

Read more
Team Castle Water triumphs in Business Fives Tayside Charity Football Event, as ...

22/9/2023

Castle Water, the UK’s leading independent business water retailer, emerged...

Read more
View more