Aqus System. Reuse your water to flushing it!

Yesterday some friends and me were talking about new ideas for a project I have in mind and one of them had a good idea about reusing grey water for the WC.

I have search online about this idea and I have found that there is a company that invented a machine to reuse grey waters in the WC.

If you are interested on that, here you have the link to read more about it. It is something that definitely will help to have a responsible use of water.