Consumption may be high for many reasons. If a bill is estimated too low for a length of time, an actual meter reading may result in a large increase. More people may be living in the household. During the summer, water consumption may be higher because you are watering the lawn or garden, or an outside hose may be left on. In commercial situations, you may have water-cooled air conditioning or your business may have increased or changed adding to water usage. Often, consumption may be high because of leaky plumbing.