How much water is lost from leaks?

25067Grade level: 5th

Skills: Percentage, multiplication & division

Related environmental issues: Water

Area level: household

Many households waste water because of leaks such as dripping faucets and leaking water heaters.  On overage, a household in the United States loses about 13% of water because of leaks.

  1. Inside the house, the average American family of four uses 300 gallons* of water per day. How much water is lost per day because of leaks?
  2. How many water is lost per week because of leaks?
  3. A toilet uses about 3 gallons of water in every flush. The amount of leaks in a week is equivalent to how many times of flush?

Source: US Environmental Protection Agency

*The average American family uses 280 gallons of water indoors but the number was modified to fit the grade level.


Answer keys

  1. 39 gallons (300 x 0.13)
  2. 273 gallons (39 x 7)
  3. 91 times (273/3)