Turn off all your water consuming appliances like washing machines, Ros, etc
Close all the faucets and ask everyone in the home not to use water for roughly 30 minutes.
Check your water meter and note the needle’s position on the dial at the beginning of the 30 minutes.
Wait for 30 minutes. Make sure no one is using any water consuming appliances or the bathrooms.
Check the water meter and take note of the needle’s position at the lapse of 30 minutes. If there is any change in the position at all, you may have a leakage.
somewhere in your home that is not only inflating your bill and probably damaging your property.