Did you know that it’s as easy to change your business water supplier as it is to change your domestic electricity and gas suppliers?

By law, businesses of all sizes in England and Scotland are free to choose their own business water supplier, which means you can shop around for the best deal and the most suitable offering for your small business.

Is there such a thing as too small?

No. It doesn’t matter what size of business premises you have, you’re going to need water, which is why your business is eligible to take advantage of the same cost savings and water efficiency advice as any other business, however large or small.

Where to start looking for the best business water supplier

If you’re looking for a new supplier but aren’t sure where to start, Open Water - which is run by Ofwat, Defra and Market Operator Services Ltd (MOSL) - has a directory of water suppliers in England and Wales. If your company is based in Scotland, check out the Scottish water suppliers on the Scotland on Tap website.

How to choose the best business water supplier

The services you receive will need to match your needs, so make sure you do your research and find out if what is being offered is right for your business before you switch water supplier.

  • If you’re trying to go paperless, look for a company that gives you the option of receiving your bills electronically. Castle Water customers can switch to paperless billing MyAccount, our online customer portal.
  • If you’re trying to stay on top of your costs, then make sure you opt for a company with an online customer portal that will give you access to your account - then you can check your details, update your account, submit a meter reading, or even find out where your water meter is, anywhere, anytime.
  • When you’re running a small business, it’s very easy to become so immersed in your work that bills sometimes get neglected, so make sure you choose a supplier offering flexible payment options, including Direct Debit, that will suit your business best and ensure you never miss a payment.
  • The climate crisis affects individuals and businesses alike, so make sure you know the business water supplier is doing what it can to improve water efficiency. This will not just help the planet; it’ll also help you save even more on your bills.
  • If Corporate Social Responsibility (CSR) is important for you, choose a business water supplier with a strong CSR policy, that works hard to improve its business practices to reduce its carbon footprint.
  • One major reason why people are reluctant to switch business water supplier is that they think it will be a complex procedure. But this doesn’t need to be the case. Make sure your new supplier is, like us, happy to do all the hard work for you, including finding the best deal, so you can spend more time on what matters most… your business.

Why switch to Castle Water?

Castle Water is the UK’s leading independent business water supplier, with more 5-star Trustpilot reviews than all other water retailers combined. Servicing more than 350,000 customers, we take a long-term view of customer relationships and do as much as possible to help our customers.

We help our customers to save water and save money with free, practical advice and resources. Our industry-leading partners are also on hand to offer additional water efficiency services.

We’re always looking for ways to improve our service and make it even easier for our customers to manage their Castle Water account. Our customer portal MyAccount has everything you need to stay in control of your business water services, keep your bills up-to-date and your costs down. Log in to view bills, check your account balance, see submit meter readings, use the interactive map to find your water meter on the interactive map and much more.

We’re proud to partner and support Save the Children’s Emergency Fund. In the critical first few hours and long after the initial emergency, Castle Water and Save the Children make sure children can get the safe, clean drinking water they need to survive. Plus, for every meter reading a customer submits that is used to calculate their bill, we donate £1 to the Emergency Fund.

We provide a range of services including business water services & water efficiency audits.

So, what are you waiting for? Click here to get an instant quote and start saving now.


We're helping businesses in England & Scotland save on water bills, and with more 5-star Trustpilot reviews than all other water retailers combined - our customers recommend us.

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