To check for leaks, turn off all water faucets (including your icemaker). If the meter doesn’t have a leak detector, it will have a sweep hand. Record the meter reading or mark the needle position with a pencil or piece of tape. Keep the water off. Wait at least 15 to 30 minutes (some leaks have a cycle). Reread the meter gauge to determine if any water has been used. If a leak is detected, the likely cause may be leaky toilets and/or irrigation systems.