This system collects the water from the sink and, after filtering and disinfecting it, uses it to fill the toilet tank. According to its inventors, with this system we can save an average of 35 liters of water per person per day (ten liters of water per minute average each time we use it). Initially it can be easily adapted to any toilet.
Water is a scarce commodity today, and as such, it is also more expensive every day. So the Aqus system seems to us an ingenious and simple solution to save water and money at home.
The operation of the system is very simple: the water coming from the sink drain is collected, filtered and disinfected, and is led to the toilet cistern. As it is not going to be used as drinking water, a basic disinfection would suffice. According to the manufacturer, between 7,000 and 30,000 liters of water per year per household could be saved, a figure that, scaled to a city or a country, would give us scandalous numbers.
If these types of technologies exist, why don’t governments or large companies bet on them?
Currently this particular device is not marketed, but it can be a good source of inspiration for current projects.