How your bill is calculated

If there’s a water meter at your premises the water and wastewater charges will be calculated using meter readings. We use actual readings and estimates based on what we know about your normal consumption. You can provide meter readings at any time at this page. For more detail and help understanding your bill, go to castlewater.co.uk/billexplained.

If there is no water meter at your premises, your bill is calculated based on an estimate set by the Wholesale supplier. This may be based on the Rateable Value of your premises or what’s called an 'assessed volume' which depends on what the Wholesaler knows about your business and what water is being used for. If you think the estimate is wrong or if you are interested in having a meter installed, let us know.