Switch water supplier

For better business water switch to the UK’s leading independent water retailer

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What our customers say about us

How to switch water supplier

Making a switch shouldn’t feel like jumping over hurdles or impact any business operation. Castle Water’s switching process is simple...

Step 1

Get a free quote online

Step 2

Let us take care of the switch

Step 3

You run your business as normal

We're the only water retailer in the UK to employ our own metering team

By employing our own metering team, we’ve taken back control of meter readings. MOSL recently rated us the highest performing water retailer in the UK for metering.

Our 96% success rate in meter reading tasks surpasses all other major retailers, and MOSL’s “Holistic Reporting” score of over 94% also ranked Castle Water above other national retailers.

Not only do our team take readings and report these back, but they can also help in locating difficult to find meters and assess potential faults. They’ll then update your Castle Water account to make locating your meter in future simple.

Everything at your fingertips

castle water mobile app showing account balance
customers use the portal on average each day
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Manage payments

Manage payments and find invoices and statements for one or multiple accounts all in one place.

Meters and readings

Find your meter, submit meter readings and track usage to ensure you only pay for the water you use.

Pay with Direct Debit

Set up Direct Debit quickly and securely for all your accounts in just a few minutes using the portal.

Help and support

Find the answers you need, track support cases and submit requests faster than ever before.

Tailored 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.

You need to focus on your growing business, so why waste time on your utilities? You can expect a fast service designed to save you time and money.
Man cleaning at a public pool
If you operate a large organisation that consumes more than 6,000m³ of water in one single year, we have services designed specifically for you and your business.
bottles of liquid
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 online quote now

Simply enter your postcode and a few more details and you can get an instant quote for your business water and wastewater.