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Our strength? Business water.

No other retailer challenges the water industry like we do to get the best prices for our customers. Our UK-based team will do all the heavy lifting for a fast and easy switch.

Pound for pound, we can make your business water work harder for you.

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We're the giants in your corner

Castle Water are the UK’s strongest and most trusted water retailer. We provide superior business water and wastewater services, market-leading expertise, and champion for better industry standards.

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Strong solutions for businesses of all sizes

Whether you’re a small company or a larger industrial customer with several sites and complex wastewater needs, we’ll give you a better water service.

Small Premises

You need to focus on your growing business, so why waste time on your utilities? Castle Water customers enjoy fast, efficient service – plus plenty of features that save you time and money.
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Large Premises

If you are running a large organisation that consumes more than 6,000m³ of water in a single year, we have services designed specifically for you.
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Multiple Premises

Do you have multiple business premises? We offer multi-site solutions that allow consolidated billing and can help meet your operational and sustainability goals.

Get your instant quote now

Simply enter your postcode to get started. All we need is a few more details to give your business an instant quote you can trust.