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Why Do Some Toilets Have Two Flush Buttons? Here’s What They Really Do

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The larger button releases nearly all the water stored in the tank.

Best used for:

  • Solid waste
  • When a stronger flush is needed

Typical water usage:

  • About 1.3–1.6 gallons (5–6 liters).

Why Two Buttons?

The dual-flush system was developed to improve water efficiency.

Benefits include:

  • Uses less water overall
  • Can help reduce water bills
  • Conserves drinking water
  • Supports environmentally friendly households

How Much Water Can You Save?

A traditional older toilet may use 3 to 5 gallons (11–19 liters) with every flush.

Modern dual-flush toilets can reduce water use dramatically by allowing you to choose only the amount of water needed.

Over the course of a year, this can save thousands of gallons of water, especially in larger households.

Common Myths

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