What is Aqua Loop, a high school student's invention that saves thousands of liters of water per year ?

© Markus Spiske/Unsplash

If we talk to you about solutions to save water in the shower, it is likely that limiting the amount of time you spend in the shower will come to mind first. Which is a good reflex; the expense being de facto mostly incurred while you remain under the continuous jet of running water.

However, there is one neglected expense item: that of waiting for the water to arrive at the right temperature. A period during which the water continues to flow directly into the wastewater outlet. Without it having really been used wisely in the meantime.

Save “waiting water” for the shower

Depending on the distance between your bathroom and the hot water tank, or the gas water heater, the equivalent of one or two minutes of tap water can flow. A precious resource that ends up being totally wasted.

Not that it necessarily means a huge saving on the bill at the end of the year – although it is also necessary to take into account the cost of energy: in other words, the cost that results from heating the cold water that replaces the volume of water in the pipe between your tank/boiler and the bathroom.

But this idea could, if the system were massively adopted, allow us to preserve a huge quantity of drinking water. A resource that is unevenly distributed and which is increasingly lacking in a large part of the planet.

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The idea of ​​the Australian high school student is therefore simple: she designed a device that allows, with a temperature sensor and a few derivations, to save this “waiting water” normally wasted. According to her, the saving would be around 5 liters of water per shower. Which quickly turns into a few cubic meters of water at the end of the year.

The rest ? Her concept quickly piqued the interest of entrepreneurs and other players in the sector. Like 200 other young inventors from her state, she will soon participate – thanks to the patronage of Eman Soliman, CEO of EduTech Australia – in the STEAMS-Preneurs Education Program and Competition.

The latter aims to steer the education of young girls towards entrepreneurship while giving them all the necessary keys in science, engineering, and other essential subjects to carry out their project. At the end of the program, the best project receives a financial reward which allows, among other things, to move on to the next stage.

In short, his project will probably go all the way to the commercial stage, but on our side, we may have to wait a few more years to see this invention arrive in our homes and apartments. It remains likely that this ingenious invention will perhaps inspire other inventors by then.

• A 14-year-old Australian girl has invented a system that saves cubic meters of water per year.
• Her concept? Recycle waiting water, the cold water that precedes a more pleasant temperature.
• The savings are substantial – and the project interests many local stakeholders.

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