So if you have high water bills, do the following math: Find out how many cubic meters of water your household has consumed in one month. That should be on your bill somewhere. I am on a well so I don’t get a water bill. Multiply that number by 1.39 and that’s your average consumption in liters per hour. Factoid: a dripping tap that is leaking 1 ml of water per second will use almost 2600 liters of water per month.