In a standard shower, ten minutes of washing can use around 150 liters (nearly 40 gallons) of water. A closed-loop shower system called OrbSys designed by Mehrdad Mahdjoubi cuts down greatly on water consumption by instantly recycling the shower water. The designer’s goal was to create a shower that would not only help conserve water in the first world, but make the most of scarce water in third-world countries.
The shower works by catching the hot water that falls from the tap into the drain. It is instantly purified to drinking water standards and then recycled through the tap once again. Because the entire process takes such a short amount of time, the water only needs to be minimally reheated. The closed system uses only about five liters (1.3 gallons) of water per 10-minute shower, making it an exceptionally eco-friendly replacement for a standard shower – particularly in areas with water shortages.