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Switch water supplier

Switch water supplier

Switch to Castle Water for award winning service and start saving on your fixed water charges.

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Changing water supplier

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Business water services

Business water services

Switch to Castle Water for award winning business water services for companies and organisations of all sizes.

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Water services

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Expert water, leak and drainage support for your business

Explore our range of specialist plumbing and drainage solutions to keep your business running smoothly.

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Water efficiency

Water efficiency

Save water and reduce your monthly bills with our practical water saving measures and helpful advice.

water efficiency resources

Water efficiency

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Water saving devices

Business water leak detection

Water leak - who's responsible?

Detecting leaks in pipes

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Trade effluent

Trade effluent

Unlike other retailers, we have a dedicated trade effluent team ready to support you. Find out more about the resources available today.

apply for trade effluent consent

Trade effluent services

What is trade effluent?

Trade effluent removal

Trade effluent disposal

Wastewater treatment
News & insights

How can businesses improve England’s water shortages

June 17, 2025

News

Castle Water celebrates 20,000 5-star Trustpilot reviews

Team Castle Water steps up for charity at 2025 Glasgow Kiltwalk

Castle Water and Bowls Scotland team up for World Water Day 2025

Castle Water shortlisted among top 8 UK businesses for Customer Satisfaction at British Business Awards 2025

Insights

Preparing for dry weather in 2025

World Water Week 2025

Look carefully before you switch your business water – mis-selling is rife

Water leaks – Who’s responsible for the bill?

Case Studies

SUEZ Switch Over 200 Sites To Castle Water For Optimised Services And Solutions

Sweetening The Deal: Castle Water Resolve Loss Of Water Pressure At Leading UK Cane Sugar Manufacturer

How Castle Water Saved £6 Million For Customers In 2020 During The Pandemic

Drought Resilience Through Innovation
Help & support

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