Which indoor fixture uses the most water per day?

• A. Toilet
• B. Faucet
• C. Shower
• D. Clothes Washer

Answer: (A)

The main idea here is to compare how much water is used daily by each fixture based on two factors: how often that fixture is used and how much water each use consumes. A toilet becomes the largest daily consumer because it’s flushed several times by every person each day, and even with a modern low-flow model, each flush uses a substantial amount of water. Faucets deliver water in small amounts each time, and showers, while high in water per minute, depend on how long you shower; many households don’t have enough total daily shower time to surpass the toilet’s daily total. Laundry can also use a lot per load, but daily loads vary and typically don’t exceed the total daily toilet usage in many homes. So, the toilet ends up using the most water per day.