The strongest name in business water
Castle Water. Built for businesses that mean business. Our UK-based team will do all the heavy lifting for a fast and easy switch.
We're the giants in your corner
Unlike many other water retailers, we’re completely independent from wholesalers. Everything we do is in the interest of our customers. If you’re ever in dispute, it helps to have the reigning heavyweight in your corner.
We’re not afraid of a challenge, and our track record is full of wins. From negotiating price reductions to pushing for fairer market conditions that have saved our customers millions.
Switching is as easy as 1-2-3
- Get a quote – Quick, online and no-obligation
- We do the heavy lifting – No disruption to supply
- Business as usual - Enjoy powerful service and support
Backed by Giants
Stronger together
As proud sponsors of Giant’s Live, we know what it takes to deliver under pressure. Castle Water is the heavyweight choice for UK businesses, big or small.
Switch for strength
Make the switch to Castle Water for clearer bills, smarter consumption insights, and lower fixed charges. Designed for businesses that don’t shy away from scale, our expert team ensures a smooth transition – no disruption, just control and results.
FAQS:
Business owners in the UK can change water suppliers for better water rates. Since the business water market was deregulated in 2017, Castle Water has been the UK’s leading independent water retailer.
If you would like to consider switching water supplier but wouldn’t know who your supplier is, Castle Water can help. Learn how we can help you figure out who your current supplier is and enable the first steps in making a switch here.
If you have any questions at all about finding out who your current supplier is, let our water experts help you.
All you need to do is complete our online quote form. Our team takes care of the rest and manages the entire switching process for you.
We offer competitive rates and award-winning customer service and advice to help our customers to lower their bills, understand their usage, and improve efficiency.
If your business is split across locations or has multiple units billed separately (and through different companies), you can streamline with help from Castle Water. We undertake consolidated billing optimisation to reduce the load on paying water bills and ensure that respectable tariffs reflect similar usage across multiple locations.
We serve a wide range of locations across the UK. We offer market-leading water services to businesses, charities, and public bodies in England and Scotland.
During initial contact, it helps if you have information on how much you use, your bills, what charges your current provider has in place and your Supply Point Identification (SPID) number.
It’s really easy to combine your water and wastewater services with Castle Water and benefit from one tariff, one bill, one payment, one supplier.
No. You can still switch. Customers on a deemed contract are free to switch to other retailers, provided their account is not in debt and they are not party to a fixed term contract. We’ll guide you through the options and help you find a better deal.