A good way to monitor for residential water leaks is to check your water meter – which is usually located on the side or back of your home. Follow these steps to monitor the meter
Turn off all water faucets and make sure no water appliances are being used.
Check the water meter and write down the numbers you see.
Return in an hour and check the water meter. If the numbers have changed, this indicates that a leak is present in your home.
Another way to check for leaks is to walk around your yard and look for patches of greener grass compared to the rest of your yard. For major sewer leaks, you’ll notice puddles of water on the surface of your lawn.