Make sure nothing in your property is using water at the moment
Take a meter reading - make sure you get all the numbers on your meter and note this down and then wait 15 minutes.
If you can't do then, then we suggest this activity is done overnight, with the reading obtained once you have closed your business and stopped using water.
If your meter readings are the same
If your meter readings are the same then no water has passed through your meter and you do not have a free-flowing leak.
You may be using more water than you realise, or you may have an intermittent leak somewhere inside your property.
If your meter readings are different
If your meter readings are different then you may have a leak at your property. Please continue to - Where is my leak