With the rising house prices, the lives of friends who need to repay their mortgages on a regular basis are also very tense. The expenses in life need to be carefully calculated to save a little money. Nowadays, not only the electricity fee needs to be paid, but also the water fee is increasing with the shortage of resources. If one day fails to pay the fee, it will soon be shut down and power outage. However, there are also many careful netizens who have carefully calculated the water consumption of their homes and found that the actual payment will be more than they use. So what is going on? Xiaobian tells you a solution and learn together.