Performed inspection of system and could not identify any active leaks. Inspected meter in front yard to see if meter was spinning. Meter was not moving indicating no active leak or water usage. All toilets and faucets appeared to be shutting off all the way. Followed by inspecting irrigation system and found That customer has a broken sprinkler head that was allowing large amounts of water to run down the driveway. This sprinkler head could be contributing to the high water bill. Recommend having landscaper replace with new sprinkler head.