We read your water meter quarterly (i.e. every three months or roughly 90 days). The number of days between meter reads can differ due to the fact that we may not be able to read your meter on exactly the same dates in each quarter.
This can be due to operational reasons or other factors, including bad weather, locked gates or a dog on your property. This means that the number of days you are charged for your water and sewerage services can vary (usually between 85-95 days), affecting the amount of your bill.
Check the top right of your bill, under the 'Billing period' heading, to see exactly how many days you have been charged for on that particular bill.