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.

Take the weight off your business and benefit by switching your water retailer today.

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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.

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

Our customers recommend us

"Choosing water supplier made easy. Competitive prices and the change over was all handled by them. Very happy with the level of service so far." - Roybn Frew, Castle Water customer