What are the two toilet buttons for?

Have you ever wondered why some toilet flushes have two buttons instead of just one? This detail, which may seem trivial, actually hides a major advance in water saving. Behind this design is a simple but effective solution, which can make a big difference to your bill and to the environment.
A smarter flush

Conventional toilets consume on average between 6 and 9 liters of water each time they are used, without distinction between actual needs. Imagine a tap that would flow at full flow, even to fill a simple glass… This is exactly what happens with a traditional flush. The two-button model changes this logic:

The small button allows for a light flush, usually around 3 liters, ideal for use requiring less water.
The large button, for its part, releases a larger quantity, often around 6 liters, for more efficient evacuation.
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