Turn off all the faucets in your house and check the water meter. 1.One way to find hidden water leaks is to perform a water meter test. If the meter is still working, there is a water leak. Water stains on walls, ceilings, or floors can be a sign of a hidden water leak. Check every room in your house, including the attic and basement, for signs of water damage.
If you can't find the meter or don't know how to read it, contact your water supplier and they'll help you.
